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Fine Showroom Specimens Discounted up to Half Price!

* Updated April 8th, 2018 *

Denver2013-94CopperPhoenixMineMichigan16cm.jpg (268236 bytes)
Denver2013-94closeup.jpg (316917 bytes)

MIN#Keystone-101 NEW!

Classic specimen of Native Copper with superb crystallization!
This is only the second cabinet sized Native Copper from Michigan that has caught my eye recently.
The crystallization of impressive Copper is sharp and unique (look at the incredible dendritic crystal
"wings" in the close-up photo!) and the entire specimen is composed of large, thick crystal dendrites
and Spinels. Along the left edge are unique 5.5 cm crystal growths that resemble wings and these are
attached to even larger crystal dendrites which form the majority of the center before finally twisting
their way upwards to the very top. Interesting note - If you look at the very center of the specimen, you
will see a smoother surface area that extends about one third of the specimen. This is an original drill bit
contact from the miner's drill! As if the specimen weren't unique enough, this puts it over the top! And
the provenance isn't too bad either. This specimen is 
Ex. Russell MacFall who was the former editor of
the Chicago Tribune. This specimen dates to the early 1900's and exhibits an antique patina over luster.
From the Phoenix Mine, Phoenix, Keweenaw County, Michigan.
Measures 16.5 cm by 10 cm by 7.5 cm in total size.

Ex. Russell MacFall Mineral Collection
Comes with a custom made, engraved display stand
Price $12,500

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Denver2016-132MimetiteTsumebNamibia50mm.jpg (416712 bytes)

MIN#Keystone-102 NEW!

Glassy crystal sprays of bright yellow Mimetite crystals on matrix!
Great looking miniature sized specimen from the famous Tsumeb Mine.
Brilliant and flashy with few minor contacts thanks to the matrix structure.
From the Tsumeb Mine, Tsumeb, Otjikoto Region (Oshikoto), Namibia.
Measures 4.7 cm by 5.4 cm by 5.7 cm in total size.

Ex. Prosper Williams, Frankie Dee Hosea Collections
Price $985

SALE DISCOUNTED TO ONLY $500!

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Denver2016-151AmethystCalciteTonglushanMineChina73mm.jpg (303421 bytes)

MIN#Keystone-105 NEW!

Pretty combination of Quartz var. Amethyst crystals with Calcite!
Two deep purple tipped Amethyst crystals sit at either side of this matrix
with Calcite crystals in the center and jutting out along the bottom edge.
Very aesthetic with plenty of flash, sparkle, and luster. In excellent shape.
From the Tonglüshan Mine, Daye Co., Huangshi Prefecture, Hubei Province, China.
Measures 5.2 cm by 7.2 cm by 3.6 cm in total size.

Price $895

SALE DISCOUNTED TO ONLY $450!

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Denver2015-130RhodochrositeCalciteBrokenHillAustralia7cm.jpg (602896 bytes)

MIN#Keystone-106

Very rare specimen featuring round balls of Rhodochrosite with Calcite from Australia!
This specimen is a very rare Rhodochrosite from the Broken Hill Mine. I've seen maybe half a dozen
Broken Hill Rhodos in the past decade and this is one of the most aesthetic of all. The Rhodochrosite
spheres measure to .7 cm in size and they all display a very strong luster atop pink, pristine surfaces.
From the Zinc Corporation Mine, Broken Hill, Yancowinna Co., New South Wales, Australia.
Measures 6.4 cm by 6.8 cm by 2.6 cm in total size.

Ex. Milton Lavers Collection
Price $1850

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Denver2016-160SilverGlenLakeMineCanada75mm.jpg (246032 bytes)
Denver2016-160b.jpg (376347 bytes)

MIN#Keystone-107 NEW!

Cobalt rarity! Native Silver wires on Quartz in matrix!
Wires of Native Silver are extremely rare from the Cobalt Region and I've only
seen a handful of specimens in the past decade or two. These wires are popping out
from the Quartz seam that runs between the layers of matrix and wires are visible on
both sides of the specimen. The weight of this piece is quite heavy, indicating a large
amount of Silver in running through the Quartz. There are wires present on both sides.
From the Penn Canadian Mine (Glen Lake Mine), Cobalt-Gowganda Region, Timiskaming Dist., Ontario, Canada.
Measures 8.2 cm by 5.4 cm by 3 cm in total size.

Ex. Bishop Mineral Collection
Price $2500

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Denver2015-75AzuriteBisbeeArizona12cm.jpg (437191 bytes)

MIN#Keystone-108

Large crystals of Azurite and Malachite ps after Malachite on matrix!
An attractive specimen featuring crystal blades measuring to 2 cm in size. The Azurite surfaces
are glassy and lustrous while the smaller crystals which are mostly Malachite ps after Azurite
display satiny surfaces. The crystals are set atop botryoidal Limonite inside a concave matrix
pocket. In very good condition with only minor contacts. The specimen could be easily trimmed if
so desired but I like the look of the original matrix so I left it intact. Good looking Bisbee classic.
From the Copper Queen Mine, Bisbee, Warren District, Mule Mts, Cochise County, Arizona.
Measures 11.7 cm by 8.5 cm by 6.8 cm in total size.

Ex. Barnett Mineral Collection
Price $1850

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Denver2015-24ApophylliteTalnakhRussia105mm.jpg (312536 bytes)

MIN#Keystone-110

Lovely specimen of pink Apophyllite crystals on matrix!
These crystal blades are basically flattened squares and they number in the dozens as they
lay flat and stand vertically atop the host matrix. The surfaces are very glassy and reflective
while the interiors are transparent to translucent. They measures to 1 cm in size and the color can
best be described as a light peachy-pink. In excellent condition with Pyrite cubes on the back side.
From the Talnakh Cu-Ni Deposit, Noril'sk, Taimyr Peninsula, Taymyrskiy, Eastern-Siberian Region, Russia.
Measures 10.2 cm by 9.4 cm by 3.3 cm in total size.

Ex. Michael Cooper Collection
Price $1850

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Denver2016-153AmethystErongoMountainNamibia58mm.jpg (176955 bytes)

MIN#Keystone-111 NEW!

Fine specimen featuring an Amethyst scepter on Quartz crystals with Schorl!
These crystals originally grew as frosted Milky Quartz but something happened
along the way and a gemmy purple Amethyst formed a scepter tip atop the tallest
crystal. Surrounded by contrasting Schorl Tourmaline accents, this is an eye catcher!
From Erongo Mountain, Erongo Region, Namibia.
Measures 5.5 cm by 4 cm by 4 cm in total size.

Ex. Bahmann Mineral Collection
Price $1500

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Denver2015-191KMCopperKeweenawPeninsulaMichigan125mm.jpg (328882 bytes)

MIN#Keystone-112

Fine, sculptural specimen of crystalline Native Copper with Quartz accenting.
Attractive specimen which features smaller, dendritic-like crystals along the far left with additional
larger crystals on the backside. The crystals become larger and more elogated as you move towards
the right side, with many exceeding 3 cm in size. Very lustrous with a gorgeous reddish-brown patina.
From the Copper Mining District in Keweenaw County, Michigan.
Measures 7.5 cm by 12.2 cm by 4.8 cm in total size.

Ex. K. Miller Mineral Collection
Price $2850

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Denver2015-177CalciteSecondSovietMineRussia145mm.jpg (300086 bytes)

MIN#Keystone-113 Sold!

Lovely pink-blushed cabinet cluster of large Manganoan Calcite crystals!
Very impressive specimen, featuring crystals up to 8.5 cm in size. The wrap around a center
matrix of flattened Galena crystals and Sphalerite like the petals of a flower. The Calcite surfaces are
glassy-lustrous and covered by angular faces throughout. A beautiful specimen and in excellent condition.
From the 2nd Sovetskii Mine, Dal'negorsk, Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia.
Measures 12 cm by 14.3 cm by 9.5 cm in total size.

Price $2850

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Denver2015-134CovelliteSummitvilleColorado75mm.jpg (409111 bytes)

MIN#Keystone-114

Lustrous and reddish-purple to iridescent blades of Covellite in cluster on matrix!
This is a Summitville Covellite cluster and look at the incredible color of those blades.
Vibrant and very lustrous blades of reddish-purple roll and reflect the light from the side
to side when the specimen is held and tilted. Many of the blades are also free standing
and actually point towards the viewer while the blades at top lay flat against the matrix.
From Summitville, Rio Grande County, Colorado.
Measures 5 cm by 7.5 cm by 3.3 cm in total size.

Price $1850

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Denver2016-155FluoriteYaogangxianMineChina40mm.jpg (222634 bytes)

MIN#Keystone-115 NEW!

Large, gemmy crystal of violet zoned Blue Fluorite with Quartz and Muscovite!
Some of the back side Muscovite can actually be seen through the glassy faces of this
transparent crystal. The color combination is lovely and all crystal faces are complete.
From the Yaogangxian Mine, Chenzhou City, Yizhang, Hunan Province of China.
Measures 4.5 cm by 5 cm by 3.3 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Tucson2015-211GalenaFluoriteMinerva1MineIllinois72mm.jpg (412603 bytes)

MIN#Keystone-116

Excellent example of an Illinois Galena specimen with surrounding Fluorite crystals!
This is easily one of the best Galena specimens I've seen from Illinois in terms of balance
and centering of crystals. It's a true work of natural art, with the largest cube in the middle
measuring 2.7 cm in size across the corners. It's surrounded by well over a dozen lustrous
Galenas and an accenting of small reddish-purple Fluorite crystals. In excellent condition.
From the Minerva No. 1 Mine, Cave-in-Rock Sub-District, Hardin Co., Illinois.
Measures 6.8 cm by 7.1 cm by 3 cm in total size.

Ex. Roy A. Smith Collection #1619
Price $1850

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Tucson2015-220SmithsoniteElRefugioMineMexico125mm.jpg (159162 bytes)

MIN#Keystone-117

Super lustrous and quite unique specimen of Smithsonite with orange caps!
I call this specimen tri-colored because you have three distinct layers of growth and coloration
displayed here. The first is a powder-blue layer which covers the underlying matrix. The second
is a more lustrous white layer. The third and final layer is a very lustrous orange colored Cadmium
Smithsonite which appears as a top cap draped over the lower two layers. The end result is one of
the most unique looking and interesting specimens of Smithsonite that I've seen in recent years.
From the El Refugio Mine, Choix, Sinaloa, Mexico.
Measures 12 cm by 4.4 cm by 6.8 cm in total size.

Price $3850

SALE DISCOUNTED TO ONLY $1950!

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Denver2016-162SmithsoniteTsumebNamibia65mm.jpg (376533 bytes)

MIN#Keystone-118 NEW!

Pretty specimen of pink Cobaltoan Smithsonite crystals on matrix!
Heavy specimen for its size, the crystals climb the matrix along the left edge to form
a stalactite-like pillar. Satiny, opaque crystals with no detracting contacts or damage.
From the Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.
Measures 4 cm by 6.4 cm by 3.2 cm in total size.

Price $895

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Denver2015-162SphaleriteGalenaPyriteTrepcaComplexKosovo95mm.jpg (500757 bytes)

MIN#Keystone-120

Super combination plate of Sphalerite crystals with brown Siderite on Pyrite crystals and Calcite!
What a great specimen this would be for Valentine's Day. It's heart shaped and covered with minerals
that are both very distinct and have contrasting colors that are quite eye catching. The Sphalerites
measure to over 2 cm in size and are a highly lustrous black or very dark brown. The Siderite which
is present between the Sphalerite is a yellowish-brown. The Pyrite displays as lustrous golden cubes
and the entire back side of the specimen is covered with graying Calcite blades. In excellent condition.
From the Trepca Stan Terg Mine, Trepca complex, Trepca Valley, District of Kosovska Mitrovica, Kosovo.
Measures 9.3 cm by 9.2 cm by 3.6 cm in total size.

Price $1850

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Denver2016-78BariteCalciteElkCreekSouthDakota87mm.jpg (246045 bytes)

MIN#Keystone-121 Sold!

Gemmy, terminated crystal of golden-brown Barite atop yellow Calcite!
Very pretty specimen with no damage. The vertical standing Barite crystal measures 3.2 cm from
base to tip and displays a beautiful coloration through glassy surfaces and transparent interiors.
Very well trimmed! From Elk Creek, Meade County, South Dakota.
Measures 5.7 cm by 8.5 cm by 5.4 cm in total size.

Price $1250

SALE DISCOUNTED TO ONLY $685!

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Denver2015-60SilverPorcoBolivia42mm.jpg (196041 bytes)

MIN#Keystone-122

Aesthetic specimen featuring a Native Silver wire rising atop Acanthite crystals!
This fine Silver is from the Porco Mine which is the oldest Silver mine in all of Bolivia.
It has been mined for hundreds of years and was one of the main Silver mines for the
Spanish beginning in the 1530's. This specimen displays a curling Silver wire that rises
over 3 cm atop the Acanthite crystal matrix. The wire is firmly attached and sturdy.
From the Porco Mine, Agua de Castilla, Antonio Quijarro Prov., Potosí Department, Bolivia.
Measures 4.4 cm by 2.6 cm by 2 cm in total size.

Price $2450

SALE DISCOUNTED TO ONLY $1250!

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Tucson2015-19SmithsoniteLavrionDistrictAkkikiPrefGreece.jpg (346694 bytes)

MIN#Keystone-123

Rare specimen of lustrous orange Cadmium Smithsonite on matrix!
Wonderfully lustrous, bright orange rolling surfaces highlight this botryoidal and very
3-dimensional specimen of Greek Smithsonite. In excellent condition with no contacts.
From the Lavrion District (Laurium), Attikí Prefecture, Greece.
Measures 7.2 cm by 10.5 cm by 3.7 cm in total size.

Price $2450

SALE DISCOUNTED TO ONLY $1250!

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Tucson2015-14CalciteHelenMineCanada105mm.jpg (213832 bytes)

MIN#Keystone-124

Gorgeous and quite rare specimen of deep golden Calcite crystals on Calcite covered matrix!
A unique looking specimen from a seldom seen locality, these Calcites have the appearance of
stacked crystals which terminated with smaller, almost pyramidal caps. These range in size up to
4 cm or more and are all in excellent condition with glassy, lustrous surfaces atop the many steps.
From the Helen Mine in Wawa, Ontario, Canada.
Measures 10.8 cm by 8.6 cm by 4.2 cm in total size.

Ex. Dawson Calcite Collection
Price $2500

SALE DISCOUNTED TO ONLY $1250!

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Tucson2014-8FluoriteSphaleriteBethelLevelMinerva1MineIllinois65mm.jpg (238813 bytes)

MIN#Keystone-125

Really cool specimen featuring sharp crystals of blackjack Sphalerite set atop Golden Fluorite!
The Fluorite crystals are clustered together and display some slight purple accenting along some of the
outer edges. The color is a rich, vibrant golden-yellow and the contrast between the minerals is very aesthetic.

From the Minerva #1 Mine, Hardin County, Illinois.
Measures 6.3 cm by 6.5 cm by 3.8 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Tucson2015-35SilverBatopilasMexico5cm.jpg (256768 bytes)

MIN#Keystone-126

Fine dendritic specimen of Native Silver   with Acanthite accents and Calcite matrix!
Great looking herringbone Silver, with full extension on both sides and a slight peppering
of darker Acanthite micro-crystals atop the Native Silver. I love the way the longest Silver
wire branches outwards along the right side and curves upwards. This specimen looks great
from either side with this being the white Calcite side. No damage or incomplete crystals.
From Batopilas, Andres del Rio District, Mun. de Batopilas, Chihuahua, Mexico.
Measures 5 cm by 4.5 cm by 1 cm in total size.

Price $1850

SALE DISCOUNTED TO ONLY $985!

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Tucson2013-274CalciteDeadIndianHillParkCountyWyoming21cm.jpg (277280 bytes)

MIN#Keystone-127

Aesthetic large cabinet sized plate featuring Golden Calcite crystals on smaller Calcites!
This is an awesome specimen and it's one that is basically a geode. The irregularly shaped matrix
was split open to reveal perfect crystals of doubly terminated Calcite set against a surface covered
with smaller cream-colored Calcite crystals. The larger golden Calcites measure to 5 cm in size and
there is no damage to speak of since all were well protected by the concave structure of the matrix.
These are scarce specimens and I've only seen a few in the past decade. This was by far the largest.
From Dead Indian Hill, Park County, Wyoming.
Measures 16 cm by 20.4 cm by 10 cm in total size.

Price $4500

SALE DISCOUNTED TO ONLY $2250!

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Denver2014-10FerberiteYaogangxianChina57mm.jpg (226650 bytes)

MIN#Keystone-129

Super lustrous crystal of Ferberite with Quartz and yellow Mica!
This 5.2 cm Ferberite is absolutely dazzling, with an intense rolling luster atop smooth, almost
glass-like surfaces. It's also doubly terminated with full completions at both ends. Beautifully
accented by Quartz and framed by yellow Mica, this is an eye catching miniature in all respects.
From the Yaogangxian W-Sn ore field, Yizhang Co., Chenzhou Prefecture, Hunan Province, China.
Measures 6 cm by 4.2 cm by 2.4 cm in total size.

Price $1500

SALE DISCOUNTED TO ONLY $785!

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Tucson2014-4AquamarineDolomiteXuebaodingChina115mm.jpg (195234 bytes)

MIN#Keystone-130

Fine tabular crystals of Beryl var. Aquamarine atop Albite and Muscovite!
This attractive specimen features a series of isolated Aquamarine crystals climbing upwards atop
a matrix of Muscovite and Albite crystals The crystals are tabular in nature and a pretty light blue
color which contrasts beautifully with the surrounding white crystallization. In excellent condition.
From the Pingwu Beryl Mine, Mt Xuebaoding, Mianyang Prefecture, Sichuan Province, China
Measures 11.5 cm by 8.4 cm by 3.6 cm in total size.

Price $1850

SALE DISCOUNTED TO ONLY $985!

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Denver2016-169FluoriteDolomiteYaogangxianMineChina115mm.jpg (355088 bytes)

MIN#Keystone-132 NEW!

Fine, gemmy crystals of violet accented Blue Fluorite on Dolomite covered matrix!
Some of the Dolomite crystals can actually be seen through the clear, glassy faces of the
transparent Fluorites. The color combination is lovely there are only a few tiny contacts.
From the Yaogangxian Mine, Chenzhou City, Yizhang, Hunan Province of China.
Measures 10.5 cm by 11.6 cm by 6.1 cm in total size.

Price $2500

SALE DISCOUNTED TO ONLY $1250!

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Tucson2012-9PyromorphiteBunkerHillMineIdaho92mm.jpg (357772 bytes)

MIN#Keystone-133

Glossy surfaces of botryoidal Arsenian Pyromorphite on matrix!
These surfaces are incredibly lustrous with the light literally jumping off the yellow to orange
coloration!
There are some minor bumps here and there but most are mainly along the trimming
edge and these could be taken out with additional fine tuning. Overall, this is a very nice plate.
From the Bunker Hill Mine in Kellogg, Shoshone County, Idaho.
Measures 7.2 cm by 8 cm by 2.8 cm in total size.

Ex. Ben de Wit Mineral Collection
Price $2500

SALE DISCOUNTED TO ONLY $1285!

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Denver2009-104descloizite.jpg (114065 bytes)

MIN#Keystone-134 Sold!

Impressive cluster of reddish-brown Descloizite crystals on matrix!
An aesthetic cluster with excellent form and very few incomplete crystals.
The crystals themselves are very lustrous and translucent at the tips!

From the Berg Aukas Mine, Grootfontein, Namibia, SW Africa.
Measures 6 cm by 5.4 cm by 4.8 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Tucson2015-74MarcasiteAmeliaMineIllinois7cm.jpg (367764 bytes)

MIN#Keystone-136

VERY RARE! Botryoidal mounds of brassy-golden Marcasite from Illinois!
This is an old time fine from the Amelia Mine and the first of this material that I have
seen from this obscure locality. Mindat.org doesn't even list a photograph for this mine.
Specimens are very rare in the marketplace and this fine example came out in the 1960s.
From the Amelia Mine, Galena District, Jo Daviess County, Illinois.
Measures 8 cm by 7 cm by 5.2 cm in total size.

Ex. Trimingham Mineral Collection
Price $1500

SALE DISCOUNTED TO ONLY $785!

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Tucson2014-2AzuriteMalachiteTsumebMineNamibia85mm.jpg (178784 bytes)

MIN#Keystone-137

Impressive specimen featuring an Azurite crystals with Malachite on matrix!
This is a huge Azurite crystal and it is in sharp and in excellent condition with a full termination.
It measures 7 cm in size from base to tip, with a partial pseudomorphing to Malachite in the center.
This specimen could be displayed from either side. It sits atop smaller Azurite crystals on the side
displayed above and atop a horizontal crystal on the opposite size. Both displays are incredible to
see and there is literally no damage to speak of save for a few very tiny contacts here and there.
From the Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.
Measures 8.7 cm by 5 cm by 2.7 cm in total size.
Ex. Karlheinz Grosch Mineral Collection

Price $4500

SALE DISCOUNTED TO ONLY $2450!

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Tucson2016-178QuartzHuanggangMineChina18cm.jpg (219084 bytes)

MIN#Keystone-138 NEW!

Spectacular cluster of Quartz var. Citrine crystals with Scepter tipped terminations!
This is an incredible display specimen and it can be displayed in a myriad of ways due to the
positioning of the large scepter-tipped crystals. One thing I want to point out is that this is not
a small specimen. It is borderline large cabinet with the main center crystal measuring nearly
18 cm in length. The crystals are included by a green mineral, probably Chlorite, along the lower
right edge, before changing over to a beautiful deep orange along their lengths. The crystals then
terminate with colorless scepters. The surfaces of the crystals are textured by hundreds of small
faces which reflect the light and create an intense sparkle. The scepters are smooth and glassy.
This is a superb Quartz specimen from a recent find and it is in excellent condition, top to bottom.
From Huanggang Mine, Hexigten Banner, Ulanhad League, Inner Mongolia Autonomous Region, China.
Measures 17.8 cm by 17 cm by 8.2 cm in total size.

Price $4950

SALE DISCOUNTED TO ONLY $2500!

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Tucson2016-90OpalRhyoliteQueteraroMexico75mm.jpg (384585 bytes)

MIN#Keystone-139 Sold!

Dazzling nodule of precious Fire Opal in Rhyolitic matrix!
This nodule was broken open to reveal a glowing interior of reds, yellows, greens, oranges, blues,
and purples. A few other colors inbetween as well. It's amazing that a rough, unappealing host matrix
can contain such incredible fire and beauty. This Opal is well centered and measures 2.5 cm in total size.
From the Carbonera Mine, La Trinidad, Mun. de Tequisquiapan, Queretaro, Mexico.
Measures 7.5 cm by 6.4 cm by 4.2 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Tucson2012-174CopperPhoenixMineKeweenawMichigan113mm.jpg (113066 bytes)

MIN#Keystone-140

Sculptural looking specimen of Native Copper with Copper crystals and Calcite!
The specimen branches out and terminates on the upper left side with dozens
of well defined Copper crystals! Calcite crystals cover the lower right side of the
specimen. An interesting and aesthetic Copper which displays a bi-colored patina!
From the Phoenix Mine in Keweenaw County, Michigan.
Measures 11.3 cm by 6 cm by 4.5 cm in total size.

Ex. Schlichter Mineral Collection
Price $1850

SALE DISCOUNTED TO ONLY $925!

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Tucson2012-209EtchedFluoriteMinervaMine1Illinois85mm.jpg (178668 bytes)

MIN#Keystone-141

Incredible specimen of naturally etched bi-colored Fluorite!
I normally don't acquire etched Fluorite specimens although I know they are very popular
with collectors. This one, however, jumped out at me when I saw it in Tucson and I grabbed
it for the update. This is the most amazing etched specimen I think I've ever seen. It looks
like a sculpture with golden-yellow pillars rising upwards until they reach a purple cap which
displays less etching and even some smooth faces. The entire structure looks like a series
of "mushrooms" and is very 3-dimensional
from all sides. I might also add that it's very
difficult to photograph due to the its depth of structure and is much better in person.
Circa late 1970's - From the Minerva #1 Mine, Hardin County, Illinois.
Measures 5.3 cm by 8.4 cm by 7.3 cm in total size.

Ex. Roy A. Smith Mineral Collection
Price $1250

SALE DISCOUNTED TO ONLY $625!

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Denver2008-416galenasphal.jpg (81035 bytes)

MIN#Keystone-142

Impressive crystals of lustrous Galena with Sphalerite sitting atop Dolostone matrix!
The Sphalerite crystals are distinct and well isolated. One can be seen in front just
below the Galenas and the other is perched atop the matrix just behind the Galenas.
From the Cumberland Mine, Smith County, Tennesee.
Measures 7 cm by 6.2 cm by 6 cm in total size.

Price $650

SALE DISCOUNTED TO ONLY $325!

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Tucson2010-332SilverSanMartinMineMexico.jpg (71699 bytes)

MIN#Keystone-143

Thick and impressive curved wire of Native Silver accented by micro Acanthite!
A superb example of an off-matrix Silver wire! The striations are very pronounced
and the luster is excellent. A lovely antique patina completes the entire package.
From the San Martin Mine, San Martin, Zacatecas, Mexico.
Measures 3.6 cm by 2.1 cm by 1.2 cm in total size.

Price $1500

SALE DISCOUNTED TO ONLY $750!

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Tucson2011-139IlinoisBi-coloredFluorite2.jpg (221998 bytes)

MIN#Keystone-144

Amazing specimen featuring dark purple cubes of Fluorite alongside etched yellow Fluorite crystals!
I never cease to be amazed by the combinations Fluorite can create for itself. This interesting specimen
began as a yellow Fluorite cluster. Later it was etched by natural solution and later overgrown on the
left side by purple Fluorite cubes. The basic structure of the original yellow Fluorite is still visible
despite the etching and together both colors create a wonderful specimen which has a lot to say.

From the Victory Mine, Cave-in-Rock, Hardin County, Illinois.
Measures 8 cm by 11.2 cm by 7 cm in total size.

Price $1500

SALE DISCOUNTED TO ONLY $750!

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Tucson2010-313PyriteQuartzKrushevDolMineBulgaria.jpg (122968 bytes)

MIN#Keystone-145

Super lustrous crystal clusters of Pyrite on Quartz matrix!
The largest cluster measures 3 cm in size and most are 2 cm to 3 cm. The crystals
themselves are very flashy golden-bronze with sharp faces and layers of growth.

From the Krushev dol Mine, Madan Ore Field, Rhodope Mtns., Smolyan Oblast, Bulgaria.
Measures 11.2 cm by 7 cm by 4.5 cm in total size.

Price $585

SALE DISCOUNTED TO ONLY $300!

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Tucson2013-141AcanthiteAmethystCzechRepublic.jpg (206530 bytes)

MIN#Keystone-146

Lovely Amethystine Quartz with Pyrargyrite, Prousite and Acanthite crystals on matrix!
This is a classic Silver specimen with a beautiful display. There's a good bit of red still
showing through in the Pyrargyrite and Prousite crystals. They're in great shape as well.
From St. Joachimsthal, Erzegebirge, Czech Republic.
Measures 6 cm by 5 cm by 3 cm in total size.

Price $1250

SALE DISCOUNTED TO ONLY $625!

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Tucson2013-142DanburiteCitrineQuartzCharcasMexico87mm.jpg (167389 bytes)

MIN#Keystone-147

Natural Quartz var. Citrine crystals on glassy white Danburite!
Fine specimen featuring a large terminated Danburite crystal with natural
Citrine Quartz crystals attached to the front and bottom. This is a fairly unique
specimen and I can't recall seeing another like it. The Danburite is complete and
beautifully glassy, measuring 8.5 cm by 3.2 cm in size. It is accompanied by a dozen
of so other Danburites of varying size. I count at least six orange Citrine crystals,
all of which are quite gemmy. The largest of these measures to .8 cm in length.
From Charcas, Mun. de Charcas, San Luis Potosí, Mexico.
Measures 8.5 cm by 6.4 cm by 5.3 cm in total size.

Price $895

SALE DISCOUNTED TO ONLY $450!

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Tucson2016-266AquamarineSchorlErongoMtNamibia.jpg (191206 bytes)

MIN#Keystone-148 NEW!

Aesthetic combination of Aquamarine perched atop a Schorl Tourmaline!
Very attractive and cute specimen, the Aquamarine is perfectly terminated
and gemmy blue while the Schorl is doubly terminated. It features a smooth
termination at top and a jagged termination at bottom. Very nice and no damage!
From the Erongo Mountain, Erongo Region, Namibia.
Measures 6.5 cm by 4.4 cm by 3.8 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Denver2010-202malachitepsazurite.jpg (197226 bytes)

MIN#Keystone-149

Fine specimen of Malachite ps after Azurite crystals!
A classic Tsumeb specimen, these pseudomorphed Azurite crystals are sharp with a distinctive form.
The terminations criss-cross somewhat and both are complete and uncontacted. Very nice miniature!

From the Tsumeb Mine, Tsumeb, Namibia, SW Africa.
Measures 5.5 cm by 3.8 cm in size.

Price $785

SALE DISCOUNTED TO ONLY $400!

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Tucson2016-265TourmalineAlbiteStakNalaPakistan.jpg (179746 bytes)

MIN#Keystone-150 NEW!

Tri-colored crystals of Tourmaline attached at center by a ball of Albite blades!
These beautiful crystals are doubly terminated and display a soft pink tip! The bottom side
termination is a flat termination, displaying a gemmy green portion just beneath the dark
green / olive-green center. In excellent condition with well striated and very lustrous faces.
From Stak Nala, Haramosh Mts., Skardu District, Gilgit-Baltistan (Northern Areas), Pakistan.
Measures 6.7 cm by 3.2 cm by 2.6 cm in total size.

Ex. R. R. Stoddard Collection
Price $1850

SALE DISCOUNTED TO ONLY $925!

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Denver2010-149ChinaPyromorphite.jpg (182086 bytes)

MIN#Keystone-151

Fine cluster of Pyromorphite crystals off matrix!
I say off matrix because the host matrix is pretty much gone, leaving a concave cast beneath
the Pyromorphite. This is a smaller version of the larger plate above and is in excellent condition as
well. The crystals are lustrous and reflective with full terminations and just a tint of olive in the green.

From the
Daoping Mine, Gongcheng City, Guangxi Zhuang Autonomous Region, China.
Measures 2.9 cm by 3.9 cm by 3 cm in total size.

Price $685

SALE DISCOUNTED TO ONLY $350!

To Order This Specimen, Please Click Here!

 

Denver2010-214AmethystSwakopmundNamibia82mm.jpg (190480 bytes)

MIN#Keystone-152

Beautiful specimen of Amethyst-tipped Quartz crystals on Quartz cast matrix!
A specimen that is very pleasing to the eye! The Amethyst color is intense and this creates
a radical break where the Quartz crystals begin to grow scepters. The two upright crystals on
the top right display this feature very well. All the terminations are complete with only a couple
of bumps on the backside of two crystals. This definately doesn't detract from the specimen.

From the Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia
Measures 7 cm by 9 cm by 4.1 cm in total size.
Ex. Charles Key Mineral Collection
Price $2500

SALE DISCOUNTED TO ONLY $1250!

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Tucson2008-98poldvar.jpg (64453 bytes)

MIN#Keystone-153

Gorgeous hot peach-colored Olmiite crystal ball on gem Calcite!
This was originally labeled as Poldervaartite but very recent analysis has shown that these are
indeed Olmiite - a Mn dominant Poldervaartite. These crystal balls have excellent luster and color.
From the N'Chwaning II Mine, Kuruman, Northern Cape Province, South Africa.
Measures 4.4 cm by 3.2 cm in size.

Price $550

SALE DISCOUNTED TO ONLY $275!

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Denver2010-136AdamiteCalciteOjuelaMineMexico8cm.jpg (261205 bytes)

MIN#Keystone-154

Glassy, isolated crystals of bright yellow Adamite with colorless Calcites on Limonite matrix!
Very attractive specimen with a good amount of flash and color. The crystals are complete and in
excellent shape. The glassy Adamites stack together and really pop out against the orange Limonite!

From the Ojuela Mine, Mapimi, Durango, Mexico.
Measures 6.8 cm by 7.4 cm by 4.5 cm in total size.

Price $1500

SALE DISCOUNTED TO ONLY $750!

To Order This Specimen, Please Click Here!

 

Denver2010-49SphaleriteGalenaChalcopyriteAmethystCreedeColorado.jpg (162274 bytes)

MIN#Keystone-155

Very fine specimen of Sphalerite crystals with Galena and Chalcopyrite on Amethyst!
The Sphalerites are very impressive with the largest measuring 3.5 cm in size! They glow
rich golden-brown when backlit and could be cut into some gorgeous gemstones. The lustrous
Galenas and golden Chalcopyrites sit with the Sphalerites atop a light purple layer of Amethyst.

From the P-vein 2 south, 5 level, Commodore Mine, Creede, Mineral County, Colorado.
Measures 9 cm by 4.6 cm by 4.2 cm in total size.

Price $1500

SALE DISCOUNTED TO ONLY $750!

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Denver2010-221BariteShirleyBasinWyoming97mm.jpg (113818 bytes)

MIN#Keystone-156

Glassy cluster of greenish Barite crystals with a small amount of matrix!
In excellent condition overall with very little in the way of chipped corners which are common
to Barite specimens. The crystals are translucent with a light greenish hue and there appears to be
small lustrous Hematite crystals nestled between some of the blades. Uncommon locality for Barite!

From the Shirley Basin, Carbon County, Wyoming.
Measures 10 cm by 4.6 cm by 4.4 cm in total size.

Price $785

SALE DISCOUNTED TO ONLY $400!

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Tucson2013-209LegranditeOjuelaMineMexico7cm.jpg (379959 bytes)

MIN#Keystone-157 NEW!

Bright yellow crystal sprays of Legrandite on Limonite matrix!
This specimen has a good amount of Legrandite for its size. There are at least three sprays
covering the center of the matrix, covering an area the measures 3.3 cm in width. The crystals
are brilliant and glassy lustrous with gemmy transparent tips. In excellent shape with no damage.
From the Ojuela Mine, Mapimi, Durango, Mexico.
Measures 4 cm by 7.2 cm by 2.9 cm in total size.

Price $2450

SALE DISCOUNTED TO ONLY $1225!

To Order This Specimen, Please Click Here!

 

Denver2010-123DolomiteCampBirbMineOurayColorado76mm.jpg (291839 bytes)

MIN#Keystone-158

Fine locality piece featuring cream-colored Dolomite crystals on Quartz drusy matrix!
This specimen is from the Camp Bird Mine and is the first Dolomite I've seen from there in quite
some time. I don't know how scarce they are but I do know that specimens from the Camp Bird
are not common at the shows. This one presents a fine gathering of small Dolomite clusters
draped over a sparkling Quartz matrix. The brown colored crystals may be small Siderites.

From the Camp Bird Mine, Ouray, Colorado.
Measures 6.2 cm by 7.6 cm by 4.5 cm in total size.

Price $785

SALE DISCOUNTED TO ONLY $400!

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Tucson2016-238AragoniteLosMolinasSpain48mm.jpg (206001 bytes)

MIN#Keystone-159 NEW!

Scarce specimen of purple Aragonite crystals with a bit of matrix!
I haven't seen one of these purple Aragonite from Spain in years so I assume most
have left the marketplace. This specimen displays a large, well colored crystal with
a smaller Aragonite attached to the left. Very glassy-lustrous with barely a contact.
From Los Molinillos - La Vacariza, Minglanilla, Cuenca, Castile-La Mancha, Spain.
Measures 4.8 cm by 4.7 cm by 3.2 cm in total size.

Price $485

SALE DISCOUNTED TO ONLY $250!

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Denver2012-19SilverRingnesgangenNorway35mm.jpg (255377 bytes)

MIN#Keystone-160

Fine dendrites of Native Silver with Acanthite and iridescent Sphalerite on matrix!
A cute combination piece which displays a good amount of fine Silver crystals along with a scattering of
iridescent Sphalerites. There may also be some Acanthites in the mix (note the crystal on the upper left).

From the Ringnesgangen Mine, Vinoren Silver Mine Field, Kongsberg, Svene, Flesberg, Buskerud, Norway.
Measures 3.7 cm by 3.2 cm by 1.7 cm in total size.

Ex. T. Bye Mineral Collection
Price $485

SALE DISCOUNTED TO ONLY $250!

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Denver2011-17PTSmithsoniteSardinia.jpg (149900 bytes)

MIN#Keystone-161

CLASSIC SMITHSONITE!!
This old timer also has Azurite crystals which are located on the far right of the matrix!
Malachite accents as well. The sea-green surfaces are in excellent condition considering the
age of the specimen and the luster is a mild frosty one. Italian Smithsonites are a rare find indeed.
Antique collection label lists the specimen as being from Masaia, Sardinia.
Circa 1900 - From the Masua Mine, Masua, Iglesias, Carbonia-Iglesias Province, Sardinia, Italy.
Measures 6.8 cm by 6.4 cm by 3 cm in total size.

Ex. Col. J. H. Pratt, Paul Tucker Mineral Collections
Price $785

SALE DISCOUNTED TO ONLY $385!

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Denver2009-499GalenaDolomitePicherOklahoma.jpg (174563 bytes)

MIN#Keystone-162

Sharp looking crystals of Galena (octahedral) atop Sphalerite!
Both the Galenas and Sphalerite sit atop a Dolomite crystal covered Chert matrix.
From the Tri-State Mining District, Picher, Oklahoma.
Measures 4.7 cm by 7.8 cm by 4.5 cm in total size.

Price $895

SALE DISCOUNTED TO ONLY $450!

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Denver2012-54CadmiumSmithsoniteChoixMexico.jpg (136618 bytes)

MIN#Keystone-163

Layered specimen featuring orange Cadmium Smithsonite over silver Smithsonite!
Beneath the silver colored Smithsonite is a layer of sea-green Smithsonite, visible
at the bottom trimming edge. The surfaces are botryoidal and extremely lustrous!
Nearly pristine with no major contacts. The Cadmium orange allows the silver to peak
through in a few scattered spots, adding a wonderful contrast to the brilliant surfaces.

From Choix, Mun. de Choix, Sinaloa, Mexico.
Measures 10 cm by 6.8 cm by 5 cm in total size.

Price $685

SALE DISCOUNTED TO ONLY $350!

To Order This Specimen, Please Click Here!

 

Tucson2010-39TwinCalciteChina.jpg (139108 bytes)

MIN#Keystone-164

Lovely, phantomed Calcite twin on smaller phantomed Calcites!
The individual Calcite crystals are all terminated with glassy surfaces and darker brown
phantoms. The specimen is nearly flawless with only a minor chip on the right side Calcite.

From Xiang Fang Lin Mine, Chenzhou, Hunan Province of China.
Measures 5.2 cm by 3.8 cm in size.

Price $785

SALE DISCOUNTED TO ONLY $400!

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Denver2009-43chinafluorqtzwolframite.jpg (63825 bytes)

MIN#Keystone-165

Terminated blade of Wolframite on Quartz points with Fluorite, Dolomite, and Muscovite!
The Wolframite blade has two irregular terminations - actually natural breaks that
rehealed in the mine. Both are partially covered with Muscovite and Dolomite crystals.

From the Yaogangxian Mine, Hunan Province of China.
Measures 6.7 cm by 4.2 cm by 5.2 cm in size.

Price $485

SALE DISCOUNTED TO ONLY $250!

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Denver2009-172vanadinite.jpg (135521 bytes)

MIN#Keystone-166

Flashy specimen featuring glassy reddish-orange Vanadinite crystals on spotted matrix!
Pretty much every crystal is in pristine condition and all are upright standing which always
creates the best overall appearance I think. The spots are nice and may be
Psilomelane.
From Mibladen, Meknes-Tafilalet Region, Morocco.
Measures 10 cm by 10 cm by 4.6 cm in size.

Price $985

SALE DISCOUNTED TO ONLY $500!

To Order This Specimen, Please Click Here!

 

Denver2012-15PyriteQuartzButteMontana7cm.jpg (327988 bytes)

MIN#Keystone-167

Large, impressive crystal of Pyrite set among Quartz  on matrix!
This is a Pyrite octahedron and it measures nearly 4 cm in size. It's one of the best Pyrites I've seen
in years from Butte, Montana and it's in very good condition as well. The above photo shows what
appears to be cracks in the main Pyrite but these are very tiny stress lines that have been magnified
by the camera. In person, they are practically invisible and get lost among the intense luster on the
crystal faces. The main Pyrite is very study and I only detect a single small contact on the backside
.
From Butte, Silver Bow County, Montana.
Measures 4.5 cm by 6.8 cm by 5.4 cm in total size.

Ex. George White Mineral Collection
Price $785

SALE DISCOUNTED TO ONLY $400!

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Denver2011-104HessoniteDiopsideTestaCiarvaItaly55mm.jpg (254851 bytes)

MIN#Keystone-168

Fine combo of Hessonite Garnet with glassy Diopside crystals from an old classic locality!
A flashy gem miniature with loads of color and sparkle and unusually large Diopside crystals!
In excellent condition overall, with only some natural matrix influenced irregular terminations
on the Diopside. This is common and not considered to be damage. Both the Hessonite and
Diopside are incredibly gemmy and glassy.
The color could best be described as reddish-orange.
From Testa Ciarva, Balme, Ala Valley, Lanzo Valley, Torino Province, Piedmont, Italy.
Measures 5.2 cm by 4.7 cm by 3.8 cm in total size.

Ex. J. Hoppner Mineral Collection
Price $785

SALE DISCOUNTED TO ONLY $400!

To Order This Specimen, Please Click Here!

 

Denver2011-98SeleniteGibraltarMineMexico14cm.jpg (135489 bytes)

MIN#Keystone-169

Cabinet sized specimen of Fishtail Selenite crystals!
An awesome display specimen, I rarely see these twinned Selenite crystals anymore and specimens of
this condition without damage and or major scuffing are extremely hard to find!
The largest fishtail twin
at the top measures 9 cm in height and 8 cm in width. It's surrounded by a smaller twin on the front and
untwinned Selenite crystals on the side and back. All sit aesthetically atop a hard white stone matrix.
From the Gibraltar Mine, Chihuahua, Mexico.
Measures 13 cm by 10.8 cm by 14.7 cm in total size.

Ex. David Stoudt Mineral Collection
Price $2500

SALE DISCOUNTED TO ONLY $1250!

To Order This Specimen, Please Click Here!

 

Denver2016-37MimetiteOjuelaMineMapimiMundeMapimiDurangoMexico85mm.jpg (406169 bytes)

MIN#Keystone-170 NEW!

Sparkling plate of orangeish-yellow Mimetite crystals on matrix!
This lovely plate is from that other famous Mexican Mimetite locality - the Ojuela Mine.
It's super lustrous and flashy with a brilliant sparkle. The color is orange over a yellow
base and the entire plate of small Mimetite crystal clusters is virtually blemish free.
From the Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico.
Measures 8.3 cm by 8 cm by 3 cm in total size.

Price $1850

SALE DISCOUNTED TO ONLY $925!

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Tucson2016-223RhodochrositeWutonMineChina43mm.jpg (169175 bytes)

MIN#Keystone-171 NEW!

Beautiful specimen of Rhodochrosite crystals with Pyrite, Dolomite, and Quartz!
These impressive Rhodochrosites came out about eight years ago and they continued to get
better and better with each new find. This miniature features rhombs to just over 1 cm in size
and the color is very good. In very condition with no major contacts and a well trimmed matrix.
From the Wutong Mine, Liubao, Wuzhou Prefecture, Guangxi Zhuang Autonomous Region, China.
Measures 4.1 cm by 2.2 cm by 1.3 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Denver2015-69BrazilianiteCorregoFrioMineBrazil35mm.jpg (144421 bytes)

MIN#Keystone-172 NEW!

Gemmy yellow crystals of Brazilianite on white Albite matrix!
This cute small miniature sized specimen features well over half a dozen gem Brazilianite
crystals, with the largest vertical crystal measuring 1.6 cm in size. In excellent condition.
From Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Brazil.
Measures 3.5 cm by 2 cm by 1.5 cm in total size.

Price $685

SALE DISCOUNTED TO ONLY $350!

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Tucson2012-214ChalcedonySideriteHuttenbergAustria8cm.jpg (189432 bytes)

MIN#Keystone-173

Bi-colored Chalcedony over Siderite crystals!
A scarce specimen of pearly Chalcedony coating large Siderite crystals. The colors
present are golden-tan and silver-grey
and there are no visible contacts to speak of.
From Hüttenberg, Carinthia, Austria.
Measures 6.5 cm by 7.6 cm by 3.7 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Denver2012-75ChalcoypyriteQuartzBandoraMineColorado35mm.jpg (185985 bytes)

MIN#Keystone-174

Large lustrous Chalcopyrite crystal on Quartz needles!
This impressive golden Chalcopyrite crystal measures 2.6 cm in length! The matrix
is a cluster of fine Quartz needles with no visible damage. I rarely see classic Colorado
mineral specimens from the Silverton area. this specimen represents a rare opportunity.
The Bandora Mine operated intermittently between 1884 and the early 1950's.
From the Bandora Mine, South Mineral Creek, San Juan Co., Colorado.
Measures 3.7 cm by 2.8 cm by 2.8 cm in total size
Ex. Grace Dyck Mineral Collection
Price $985

SALE DISCOUNTED TO ONLY $500!

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Tucson2016-163ChalcopyriteTetrahedriteRhodochrositeSweetHomeMineAlmaColorado.jpg (400710 bytes)

MIN#Keystone-175 NEW!

Scarce specimen of Chalcopyrite crystals with Rhodochrosite on Tetrahedrite!
I almost never seen specimens of Chalcopyrite from the Sweet Home Mine so even
though this specimen has Rhodochrosite atop the Tetrahedrite, the 3.2 cm Chalcopyrite
is the main draw of this specimen. Lustrous and sharp with purple Fluorite on the back.
From the Sweet Home Mine, Alma, Park County, Colorado.
Measures 6.5 cm by 5 cm by 2.5 cm in total size.

Price $1500

SALE DISCOUNTED TO ONLY $750!

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Tucson2012-222GoethitePSSeleniteChihuahuaMexico85mm.jpg (180124 bytes)

MIN#Keystone-176

Unique PSEUDOMORPH specimen featuring Goethite ps after Selenite crystals!
Visually this specimen is quite impressive. The brown Goethite pseudomorphs the Selenite crystals
and accurately displays the crystal habit despite the difference in appearance. The largest of the
pseudomorphs measures nearly 8 cm in length! The interiors are hollow and cast-like in structure.
From Santa Eulalia, Chihuahua, Mexico.
Measures 9.7 cm by 6.4 cm by 4.6 cm in total size.

Ex. Hansen Mineral Collection
Price $2850

SALE DISCOUNTED TO ONLY $1425!

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Denver2009-155creedite.jpg (79098 bytes)

MIN#Keystone-177

Gemmy crystals of lavender Creedite on matrix!
These crystals are large and isolated with a color that is more lavender than purple!
I personally prefer this look and think it's more beautiful than the darker purple
specimens. The crystals are very transparent and glassy, ranging from 1 to 1.5 cm.
Interestingly, there are a couple of orange Creedite crystals at the very top!

From Santa Eulalia, Chihuahua, Mexico.
Measures 5.4 cm by 5.3 cm in size.

Price $685

SALE DISCOUNTED TO ONLY $350!

To Order This Specimen, Please Click Here!

 

Tucson2013-292SmithsoniteChoixMexico85mm.jpg (193383 bytes)

MIN#Keystone-178

Bi-colored specimen of orange and silver-grey colored Smithsonite!
This specimen features an interesting mix of colors - Cadmium Orange and a silky
silverish-grey. I don't recall seeing this combination before and it's pretty nice. The
surfaces are lustrous with a nice rolling sheen. These is a single natural break near the
top center where the Smithsonite displays its radial form. All in all, an attractive specimen
that would be a great addition to a Smithsonite color set or a Mexican mineral collection.
From the El Refugio Mine, Choix, Sinaloa, Mexico.
Measures 8.7 cm by 8.5 cm by 4.2 cm in  total wise.

Price $685

SALE DISCOUNTED TO ONLY $350!

To Order This Specimen, Please Click Here!

 

Tucson2013-277MWCrocoiteRedLeadMineAustralia105mm.jpg (39099 bytes)
Tucson2013-277b.jpg (56636 bytes)

MIN#Keystone-179

Huge crystal of gemmy reddish-orange Crocoite!
This crystal measures 10.6 cm in length! It's the largest single Crocoite crystal I've ever offered
and it's incredibly flashy with well striated, lusterous surfaces. As one would expect, the crystal did
come apart under its own weight and has been professionally repaired. The termination is also not
complete so the crystal isn't perfect. It makes up for its imperfections with sheer size and eye appeal.
From the Adelaide Mine, Dundas Mineral Field, Zeehan District, Tasmania, Australia.
Measures 10.6 cm by 1.1 cm by 1 cm in total size.

Ex. Webb Mineral Collection
Price $1500

SALE DISCOUNTED TO ONLY $750!

To Order This Specimen, Please Click Here!

 

Tucson2012-112NevadaOrpiment.jpg (144363 bytes)

MIN#Keystone-180

Neat specimen of mustard-yellow Orpiment crystals in cluster!
I must admit that I've never offered a specimen of Orpiment from this locality before.
The Roberts Mountains are in the middle of nowhere in the center of Nevada
but they
produce some good looking Orpiment. This specimen is in excellent condition with only
minor contacts. The largest crystal at top measures about 3 cm in size and the luster of all
ranges from satiny to glassy on the back. The only point of trimming is along the far right edge.
From Roberts Mountains, Eureka County, Nevada.
Measures 6.7 cm by 4.8 cm by 3.8 cm in total size.

Price $450

SALE DISCOUNTED TO ONLY $225!

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Tucson2016-68LDCrocoiteAdelaideMineAustralia6cm.jpg (304126 bytes)

MIN#Keystone-181 NEW!

Deep reddish-orange crystals of Crocoite in a criss-crossing cluster!
Very attractive specimen featuring some pretty impressive crystals. The Crocoite
in the foreground measures 5 cm in length by a pretty thick .5 cm in width. Many of
the crystals are terminated and all display a rolling surface luster and vibrant color.
From the Adelaide Mine, Dundas mineral field, Zeehan District, Tasmania, Australia.
Measures 5.8 cm by 5.4 cm by 3 cm in total size.

Ex. Len DeRiggi Collection
Price $1500

SALE DISCOUNTED TO ONLY $750!

To Order This Specimen, Please Click Here!

 

Tucson2011-19MonteCristoMineRushAKSmithsonite.jpg (322599 bytes)

MIN#Keystone-182

Lustrous growths of pearly Smithsonite atop Cadmium Smithsonite covered matrix!
A unique specimen that I rarely encounter at the shows. The white Smithsonite is actually
colorless clusters of Smithsonite crystals which take on a "bubbly" appearance. There are
some small single crystals scattered about between the clusters but the crystal habit can
be easily seen with a 16x loupe. Beneath these are clusters of Cadmium-rich Smithsonite!

From the Monte Cristo Mine, Rush, Rush Creek District, Marion Co., Arkansas.
Measures 12.4 cm by 14.2 cm in size.

Price $985

SALE DISCOUNTED TO ONLY $500!

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Tucson2016-166AndraditeHedenbergiteMegaHorioSerifosIslandKykladesPrefGreece.jpg (254401 bytes)

MIN#Keystone-183 NEW!

Fine specimen featuring Andradite Garnet crystals on Hedenbergite!
These are sharp, lustrous Garnets measuring to 1.2 cm in size. They sit atop olive-green
crystals of Hedenbergite. In excellent condition with great eye appeal and full terminations.
From Mega Horio, Serifos Island, Cyclade Islands, Kykládes Pref., Aegean Islands Dept., Greece.
Measures 4.2 cm by 3.3 cm by 3.3 cm in total size.

Ex. Gerald Clark Collection
Price $895

SALE DISCOUNTED TO ONLY $450!

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Tucson2013-221FluoriteonQuartzafterCalciteTombstoneHillsAZ.jpg (165338 bytes)

MIN#Keystone-184

New find of Purple Fluorite on Quartz ps after Calcite!
This unique Fluorite specimen is from the Tombstone Hills near Tombstone.
Specimens appeared in Tucson for the first time. The locality is a new find and
a closely held secret but I hope to see more in the upcoming shows. The Fluorites
are mainly octahedral in habit with a matted luster and translucent interiors. They
cover most of the Quartz casts ps after Calcite crystals on both sides of the matrix.
From the Tombstone Hills, near Tombstone, Cochise County, Arizona.
Measures 9.2 cm by 8 cm by 5.7 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

To Order This Specimen, Please Click Here!

 

Denver2011-46SilverNewNevadaMineMexico30mm.jpg (189359 bytes)

MIN#Keystone-185

Stunning specimen featuring fine Native Silver dendritics on matrix!
I love the perfect Spinel Twin crystal that rises vertically atop the specimen!
An .8 cm Acanthite crystal is located just below the Spinel Twin at 9 o'clock.
From the New Nevada Mine, Batopilas, Chihuahua, Mexico.
Measures 3.1 cm by 3 cm by 2.2 cm in total size.

Price $685

SALE DISCOUNTED TO ONLY $350!

To Order This Specimen, Please Click Here!

 

Denver2013-25SmithsoniteChoixMexico12cm.jpg (131508 bytes)

MIN#Keystone-186

Lustrous specimen of lavender Smithsonite atop matrix!
The botryoidal surfaces of this lovely specimen are basically flawless with no major contacts
and a beautiful, pinkish-violet coloration. The luster shimmers atop the rolling Smithsonite and
lighter patches of coloration provide contrast and additional color to this cabinet sized plate.

From the El Refugio Mine, Choix, Mun. de Choix, Sinaloa, Mexico.
Measures 11.3 cm by 8.8 cm by 4.4 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

To Order This Specimen, Please Click Here!

 

Denver2011-49HubeiteInesiteChina.jpg (180252 bytes)

MIN#Keystone-187

Fine Quartz crystal with pink Inesite sprays and brown Hubeite accents!
Also with sparkling Apophyllite. An attractive combo featuring a full termination on
the Quartz point and multiple sprays of hot pink Inesite with multiple Hubeite clusters.

From the Dayai Mine, Huangshi Prefecture, Hubei Province, China.
Measures 7 cm by 4.7 cm by 4.8 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

To Order This Specimen, Please Click Here!

 

Denver2011-30BariteFrizingtonEngland55mm.jpg (142387 bytes)

MIN#Keystone-188

Fine cluster of terminated Barite crystals on Hematite matrix!
The specimen is in excellent condition with just minor contacts on a few crystal surfaces.
Only the normal trimming zone incompleteness is present. The matrix is a concave Hematite
cast which ranges from red to silvery grey. It serves as the perfect base for this glassy xl cluster.

From the Mowbray Mine, Frizington, West Cumberland Iron Field, Cumbria, England.
Measures 6 cm by 6.2 cm by 4.4 cm in total size.

Ex. Howard Belsky Mineral Collection (Label Included)
Price $985

SALE DISCOUNTED TO ONLY $500!

To Order This Specimen, Please Click Here!

 

Denver2010-43greenapophyllite.jpg (184377 bytes)

MIN#Keystone-189

Pretty green crystals of Apophyllite with Stilbite on matrix!
The crystals are cubic in habit with modified corners and quite translucent with transparency
near the edges. Stilbite blades are scattered about and clustered near the lower right edge.

From Jalgaon,
Maharashtra State, India.
Measures 8.6 cm by 10.2 cm by 4.5 cm in total size.
Price $650

SALE DISCOUNTED TO ONLY $325!

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Denver2010-63pyromorphite.jpg (204739 bytes)

MIN#Keystone-190

Classic specimen of glossy yellowish-green Pyromorphite in a matrix vug!
The botryoidal surfaces of this specimen are so glossy and dazzling that you might
be fooled into thinking this is Smithsonite! No damage to speak since the Pyros are
neatly tucked away inside matrix vugs on both the front and backside. Very nice!!

From La Vidale, Asprières, Decazeville, Aveyron, Midi-Pyrénées, France.
Measures 8 cm by 6 cm by 5 cm in total size.

Price $685

SALE DISCOUNTED TO ONLY $350!

To Order This Specimen, Please Click Here!

 

Denver2010-66peruvianBarite.jpg (185551 bytes)

MIN#Keystone-191

Fine plate featuring gemmy Golden Barite tabs on matrix!
This specimen was mined in 2005 and is in excellent condition with no damage to speak
of. The largest horizontal blade measures 3.3 cm in width. The upright blade is 2.6 cm.

From Cerro Warihuyn, Miraflores, Huamalias, Huanuco, Peru.
Measures 6.3 cm by 8.5 cm by 4.3 cm in total size.

Price $485

SALE DISCOUNTED TO ONLY $250!

To Order This Specimen, Please Click Here!

 

Denver2012-53SillverSmithsoniteChoixMexico.jpg (157330 bytes)

MIN#Keystone-192

Superb, lustrous specimen of brilliant silver colored Smithsonite!
Very lustrous with satiny-smooth surfaces. The color is a deep silver with frosted accents.
No damage to speak of and no visible contacts anywhere atop the attractive rolling surfaces
.
From Choix, Mun. de Choix, Sinaloa, Mexico.
Measures 6.5 cm by 11 cm by 7.7 cm in total size.

Price $985

SALE DISCOUNTED TO ONLY $500!

To Order This Specimen, Please Click Here!

 

Denver2013-65MWHematiteSouthAfrica33mm.jpg (213625 bytes)

MIN#Keystone-195

Awesome combination featuring Hematite crystals with Andradite Garnet and Calcite!
The two largest Hematite crystals criss-cross at the center and both are super lustrous and doubly
terminated! They are accented by reddish Andradite Garnets, with some actually embedded inside
the Hematites, indicating that the Hematites grew around the Garnets and completed their crystal
forms. There is barely a contact anywhere - Only a few incomplete Garnet crystals near the bottom.
From the Wessels Mine, Hotazel, Kalahari Manganese Fields, Northern Cape Province, South Africa.
Measures 3.3 cm by 2.8 cm by 2.7 cm in total size.

Ex. Webb Mineral Collection
Price $785

SALE DISCOUNTED TO ONLY $400!

To Order This Specimen, Please Click Here!

 

Denver2013-163MalachiteTsumebNamibia5cm.jpg (274021 bytes)

MIN#Keystone-196

Impressive miniature featuring sharp crystals of Malachite ps after Azurite with Duftite!
I was taken by this specimen and the sharpness of its undamaged crystals which measure
to 2.3 cm in size. They rise vertically at the bottom before criss-crossi
ng at the top. The
surfaces of each crystal are in excellent condition with a soft chatoyant luster due to the
alteration to Malachite from Azurite. Azurite is still present with Duftite at the edges.
Circa 1970 - From the Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.
Measures 4.8 cm by 3.8 cm by 3 cm in total size.

Price $1500

SALE DISCOUNTED TO ONLY $750!

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Denver2013-76AllargentumBouismasMineMorocco3cm.jpg (153253 bytes)

MIN#Keystone-197

Sharp crystals of Allargentum with Dyscrasite, Schachnerite, Native Silver, and Actinolite!
This is a great looking specimen featuring very distinctive and lustrous crystals set among
sprays of Actinolite. The Actinolite is heaviest at the bottom but is present among the crystals
at the very top as well. I've seen larger specimens of this material but this had the best crystals.
From the Bouismas Mine, Bou Azzer District, Tazenakht, Ouarzazate Province, Morocco.
Measures 3.5 cm by 2.2 cm by 1 cm in total size.

Price $785

SALE DISCOUNTED TO ONLY $400!

To Order This Specimen, Please Click Here!

 

Denver2011-36ChinaSulfurPlate.jpg (252146 bytes)

MIN#Keystone-198

Unique specimen featuring flat Sulfur crystals on sparkling drusy Quartz!
These appeared over a decade ago and I haven't seen any since. The initial find must of been
quite small. This was one of the largest plates I could find when they first appeared from China.
The Sulfur crystals are somewhat flat with shiny, glassy surfaces. Interesting and attractive.

From the Xikuangshan Sb Deposit, Lengshuijiang Co., Loudi Prefecture, Hunan Province, China.
Measures 9.5 cm by 12 cm by 3.5 cm in total size.

Price $895

SALE DISCOUNTED TO ONLY $450!

To Order This Specimen, Please Click Here!

 

Denver2016-17WulfeniteLosLamentos-Mexico84mm.jpg (204104 bytes)

MIN#Keystone-199 NEW!

Fine specimen featuring glassy-lustrous Wulfenite tabs on Calcite matrix!
This is a good looking Los Lamentos specimen and the thick Wulfenite tabular crystals are in excellent
condition with barely a contract anywhere. Anyone who knows Wulfenites knows that so often these
crystals are chipped and contacted and they do not forgive damage. Once a tabular Wulfenite is contacted,
they show it all too well. This is why I always look for the cleanest, most pristine specimens I can find and
this is a specimen that is sure to please. Very lustrous and glassy crystal surfaces with an aesthetic display.
From the Los Lamentos Mts (Sierra de Los Lamentos), Mun. de Ahumada, Chihuahua, Mexico.
Measurements - 8.3 cm by 5.6 cm by 7.7 cm in total size (small cabinet).

Price $2850

SALE DISCOUNTED TO ONLY $1425!

To Order This Specimen, Please Click Here!
* Pay For This Specimen Over 2 Months Using Our Layaway Option! *

 

Tucson2012-334MimetiteSanPedroCorralitosMexico9cmALT.jpg (245734 bytes)

MIN#Keystone-200

Lustrous specimen of Mimetite from the famed San Pedro Corralitos!
This is a very 3-dimensional specimen as the photo indicates. There are two layers of Mimetite
here, both displaying satiny, lustrous surfaces and they cover the matrix as it opens up in the middle.

The specimen has a few very minor contacts along the upper edge but these are very difficult to see
and don't detract. The matrix edge on the upper level has been stabilized to prevent any shedding.
From the Congreso-Leon Mine, San Pedro Corralitos, Mun. de Casas Grandes, Chihuahua, Mexico.
Measures 6.8 cm by 8.6 cm by 6.5 cm in total size.

Price $2500

SALE DISCOUNTED TO ONLY $1250!

To Order This Specimen, Please Click Here!
* Pay For This Specimen Over 2 Months Using Our Layaway Option! *

 

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