The Arkenstone: - New Thumbnail Collection Page 1!

A Joint Venture of Robert Lavinsky: rob@irocks.com
and Brian Kosnar: Minclassics@aol.com







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Aca TN 1081 - Acanthite - $950 (SOLD)
Level 407, San Juan de Reyes mine, Guanajuato, Mexico
Toenail/Large Thumbnail, 3.2 x 2.1 x 1.2 cm
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A remarkable and classic Acanthite featuring sharp, LUSTROUS, somewhat skeletal metallic silvery colored pseudo-cubic crystals in a gorgeous arborescent formation. The piece is in superb condition, and you couldn’t ask for more with regard to aesthetics and quality. Mexican Acanthites remain amongst the finest in the world, and choice thumbnails are not easy to obtain.





Leg TN 1081 - Legrandite - $2750
Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico
Thumbnail, 2.8 x 0.6 x 0.3 cm
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Legrandite is one of the “Holy Grails” of Mexican minerals, and mineral collecting period. The color is rarely matched by any other species, and the sheer visceral attractiveness of the crystals is one of the ultimate combinations of rarity and beauty. This specimen is a fantastic rich canary yellow crystallized “spray” showing gem transparency along the edges. The quality is superb and color is top notch. I would honestly say that only one or two tutstanding Legrandite specimens are available on the market each year, so do not pass this one up.





Carr TN 1081 - Carrollite - $1200 (SOLD)
Kanfundwa mine, Kambove, Katanga Province, Congo
Large Thumbnail, 2.8 x 2.4 x 1.6 cm


Superb Carrollite thumbnail specimens are difficult to find on the market now, especially since the great find from about 6 years ago has essentially dried up. This particular specimen is a real stunner of a thumbnail featuring MIRROR bright cuboctahedral Carrollite crystals measuring up to 1.2 cm on a beautiful contrasting, lustrous, gemmy Quartz crystal matrix. To find such perfect crystals isolated on matrix like this is a real treat, and this piece is easily competition quality.





Mim TN 1081 - Mimetite - $950 (SOLD)
Pingtouling Mine, Liannan Co., Qingyuan Prefecture, Guangdong Province, China
Thumbnail, 2.2 x 2.1 x 1.8 cm
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This Mimetite specimen is an outstanding thumbnail of this contemporary classic material. It features electric orange color, sharp, lustrous, hexagonal crystals with unique “scepter”-like overgrowths and amazing gemminess around the edges. When these Mimetites first came out of China, they were instantly regarded as some of the finest ever found. The amazingly vibrant color along with the razor sharp, highly lustrous faces makes it easy to see why these specimens are so significant.





Ert TN 1081 - Erythrite - $850 (SOLD)
Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
Large Thumbnail, 2.7 x 2.2 x 2.0 cm
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Nothing quite matches the extraordinary color of Erythrite, and Bou Azzer has provided collectors with the finest specimens for years. This piece, for the overall aesthetics and quality, is the finest Erythrite thumbnail that I have offered for sale. It features dozens of sharp, highly lustrous, translucent, rich rose-plum colored crystals in a beautiful “flower”-like spray. The piece can be displayed from a few different angles, and is very attractive all the way around.





Ars TN 1081 - Arsenopyrite - $125 (SOLD)
Yaogangxian Mine, Yizhang County, Chenzhou Prefecture, Hunan Province, China
Large Thumbnail, 2.7 x 2.0 x 1.7 cm
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The Arsenopyrites from Yaogangxian are some of the finest crystallized examples of the species that I have seen, yet top notch thumbnails are highly elusive. This piece features a wonderful, highly lustrous, doubly-terminated golden-silver colored monoclinic crystal of Arsenopyrite with a pair of sidecar crystals at the base. A fantastic example of how impressive the Yaogangxian specimens can truly be, even in a smaller size.





CuPs TN 1081 - Copper pseudomorph after Aragonite (“floater”) - $195 (SOLD)
Corocoro, Pacajes Province, La Paz Department, Bolivia
Thumbnail, 2.0 x 1.8 x 1.3 cm

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These are some of the most classic and easily recognizable pseudomorphs in the world. The classic locality of Corocoro has been known for a long time for these highly attractive and unique pseudomorphs of Copper after Aragonite. This piece is an exceptional example of this material because it features several intergrown crystals and not just a single pseudo-hexagonal tabular crystal. It is a “floater” consisting of one long prismatic crystal with a halo of smaller stubbier crystals bursting from the center of the bigger prism. A wonderful example of these hard highly sought after pseudomorphs.





Steph TN 1081 - Stephanite - $1450
Husky Mine, Elsa, Galena Hill, Mayo Mining District, Yukon Territory, Canada
Large Thumbnail, 2.7 x 1.0 x 0.7 cm
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This mine has produced some of the most impressive Stephanite specimens extant. These specimens were collected in 1977 by Joe Weinholtzner, and this mine is now completely non-operational. This uniquely colorful crystal group has a beautiful iridescent coating creating an array of pinks, blues and greens. The overall quality of the Stephanite itself is very good with exceptionally sharp faces and spledent luster. It is very tricky to find ANY of these specimens on the market these days.





PyroCh TN 1081 - Pyromorphite - (SOLD)
Daoping Mine, Gongcheng Co., Guilin Prefecture, Guangxi Zhuang Autonomous Region, China
Large Thumbnail, 2.8 x 1.9 x 1.3 cm
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Without question, these are some of the most outstanding Pyromorphite specimens on the planet. The best of the best are now long gone, and despite some small new finds, the color has yet to match the original material for vibrance. This piece is clearly from the “older” discovery as it has the top electric apple green hue. For a thumbnail, this is a very good display specimen of this material. It features dozens of lustrous, skeletal or “hoppered” crystals, which are actually transparent to translucent on the edges. The intense color is what catches your eye though and this piece has color just bursting out of it. The specimen is in tip top shape and is crystallized all the way around. If you missed out on these specimens, do not let this one get away. CANNOT BE MAILED.





FlCh TN 1081 - Fluorite (“phantom”) - $350 (SOLD)
Yaogangxian Mine, Yizhang County, Chenzhou Prefecture, Hunan Province, China
Small Miniature/Large Thumbnail, 3.0 x 2.1 x 2.1 cm
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It takes a special Fluorite thumbnail to get me excited, and this one definitely caught my eye. This piece really has it all featuring a gorgeous, sharp, lustrous, GEM, blue and purple “phantom” Fluorite cube measuring 1.4 cm which is most aesthetically perched atop a Muscovite and Quartz matrix. The photos honestly do not do the piece justice, as it is virtually water clear in areas, and you can clearly see all the way through the crystal to the matrix. A high class Fluorite thumber to be sure !





CalMes TN 1081 - Calcite - $75 (SOLD)
Naica, Chihuahua, Mexico
Thumbnail, 2.6 x 2.1 x 1.8 cm


A classic Calcite thumbnail specimen from about 25 years ago. It features an intergrown pair of very very light pink color textbook rhombohedra of Calcite associated with a small amount of accenting golden Pyrite. A very attractive specimen from this storied Mexican locality.





FlCh TN 1082 - Fluorite (“phantom”) - $245 (SOLD)
Yaogangxian Mine, Yizhang County, Chenzhou Prefecture, Hunan Province, China
Small Miniature/Large Thumbnail, 3.1 x 2.9 x 2.1 cm
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I have seen thousands of Yaogangxian Fluorites, and only a very tiny percentage were as distinctive as this one. This piece features a group of elegant, lustrous, GEM/gemmy, multi-“phantom” Fluorite cubes (the largest measuring 1.2 cm) sitting atop gem quality Quartz matrix. The “phantoms” are very striking creating a perfect purple window within a virtually colorless cube. The piece has great balance and displayability, and you could search through every Chinese dealer’s stock for years and not come up with a piece as attractive as this one.





Gro TN 1081 - Grossular - $495 (SOLD)
Lake Jaco, Sierra de la Cruz, Mun. de Sierra Mojada, Coahuila, Mexico
Thumbnail, 2.5 x 1.8 x 1.7 cm
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These classic “Raspberry” Grossular specimens were collected over 10 years ago, and it unfortunately turned out to be a very limited find. This piece for all intents and purposes, is simply one of the finest thumbnails of this material around. You couldn’t ask for more out of one these piece in the a thumbnail. It features a superb, sharp, translucent, VIBRANT “raspberry” color dodecahedron of Grossular measuring 1.5 cm which is associated with a few smaller dodecahedra on a perfectly balanced and contrasting white rhyolite matrix. Just beautiful, and in great shape overall with only a slight indentation on the right side which was left when a previously attached crystal was removed during the extraction process. This is overall the finest quality available in this find, of which most is "ordinary " and this one is of extraordinary quality.





Aeg TN 1081 - Aegirine on Feldspar - $195 (SOLD)
Mt. Malosa, Zomba District, Malawi
Small Miniature/Large Thumbnail, 3.2 x 2.9 x 1.6 cm
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This well known pyroxene is found at hundreds of localities, but surely some of the most famous of all the Aegirine occurrences is Mt. Malosa, where the crystals are truly world-class. I have not seen many thumbnails of Aegirine from this locality (and on matrix!), and this “boxbuster” is certainly one of the best I have handled. It features a beautiful pair of “rabbit’s ear” style crystals with excellent “wet” luster and very sharp faces. To top it off the crystals are aesthetically sitting along the side of a group of off-white, lustrous Microcline crystals. An excellent Aegirine, especially from this classic locality.





Kes TN 1081 - Kesterite with Mushistonite - $600
Mt Xuebaoding, Pingwu District, Mianyang Prefecture, Sichuan Province, China
Thumbnail, 1.4 x 1.3 x 1.3 cm
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For quality, this is a smoker of the super rare combination of Kesterite/Mushistonite from Xuebaoding ! First off, it does not have that “dingy” dirty brown color to it, but rather the Kesterite is coated with elegant green Mushistonite. The underlain Kesterite is actually a black metallic color, and is totally enveloped by the layer of Mushistonite. There appears to be a tiny spot of Malachite on the specimen as well. One does not often have the opportunity to view such textbook quality Kesterite, and these crystals are classic disphenoids, and are well isolated so they can be examined with ease. Overall, this is a primo thumbnail of this exceptionally rare association.









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Rob Lavinsky, rob@irocks.com

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