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*** Welcome to Mineral Classics! Sunday, November 19, 2017... Our database contains 2589 specimens, encompassing 187 species... Please be sure to check out our new fully searchable database feature (click on the Search Site button on the left side of the screen)




Worldwide Mineral Specimens





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Ilvaite on Quartz from Sovietskiy #1 Mine, Dal'negorsk, near the Sea of Japan, 500 km NE of Vladivostok, Primorskiy Kray, Russia [./worldwidemix110/ilv110a.jpg] Ilvaite on Quartz from Sovietskiy #1 Mine, Dal'negorsk, near the Sea of Japan, 500 km NE of Vladivostok, Primorskiy Kray, Russia [./worldwidemix110/ilv110b.jpg]


No. ILV110 - $ 7500.00 (=~ £ 5105.25)

Ilvaite on Quartz

Locality: Sovietskiy #1 Mine, Dal'negorsk, near the Sea of Japan, 500 km NE of Vladivostok, Primorskiy Kray, Russia

Specimen Size: 12.5 x 10.2 x 9.2 cm (cabinet)
Largest Crystal: 4.5 cm.


Typically, Ilvaite is not found in large matrix display specimens. Most often, the species is seen in slender single crystals off matrix. This specimen is from one of the most impressive Ilvaite discoveries at Dal'negorsk in the mid 1990's. As was the case with nearly every specimen from this find, the specimen is repaired, but expertly so, and it does not detract from the appeal and character of the specimen. The mirror bright, nearly wet luster and classic "chisel"-shaped terminations of the two predominant crystals at the top most part of the specimen is hard to miss. They, along with a few smaller accenting Ilvaite crystals sit atop a mound of dark green Hedenbergite which is coated by dozens of sharp, lustrous "Beta Quartz" crystals. This is easily one of the most dramatic and aesthetic Ilvaite specimens I have seen from this or any locality. For the size and superior quality, it would be hard to find another like it in this market, especially since Dal'negorsk has not produced these specimens in years.

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Beryllonite from Paprok, Nuristan Province, Afghanistan [./worldwidemix110/beryln110b.jpg] Beryllonite from Paprok, Nuristan Province, Afghanistan [./worldwidemix110/beryln110d.jpg] Beryllonite from Paprok, Nuristan Province, Afghanistan [./worldwidemix110/beryln110c.jpg] Beryllonite from Paprok, Nuristan Province, Afghanistan [./worldwidemix110/beryln110a.jpg]


No. BERYLN110 - $ 4000.00 (=~ £ 2722.80)

Beryllonite

Locality: Paprok, Nuristan Province, Afghanistan

Specimen Size: 7.0 x 6.8 x 4.1 cm (small cabinet)


A VERY good-sized, doubly-terminated, multi-crystallized, white, chatoyant, crystal group of thin, prismatic Beryllonite crystals from what is one of the top localities in the world for the species. It seems to me that the number of Beryllonite specimens from Afghanistan has dwindled over the last ten years, and if it wasn't for these specimens, there would be very little available on the market. This species is most commonly found in pegmatites, and most people don't realize that it's actually a phosphate, as opposed to most pegmatite species which are silicates. For a phosphate species, this is a large specimen, and very attractive for the material. For the size, the piece would certainly yield a large number of sizeable "cat's eye" gems that would be worth MUCH more than the specimen itself. A great Beryllonite specimen for any pegmatite collector, a phosphate collector or anyone who appreciates excellent crystallized examples of lesser known species.

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Stokesite on Quartz from Urucum mine (Tim mine; Córrego do Urucum pegmatite), Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil [./worldwidemix110/stok110b.jpg] Stokesite on Quartz from Urucum mine (Tim mine; Córrego do Urucum pegmatite), Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil [./worldwidemix110/stok110a.jpg] Stokesite on Quartz from Urucum mine (Tim mine; Córrego do Urucum pegmatite), Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil [./worldwidemix110/stok110c.jpg]


No. STOK110 - $ 950.00 (=~ £ 646.66)

Stokesite on Quartz

Locality: Urucum mine (Tim mine; Córrego do Urucum pegmatite), Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil

Specimen Size: 10.2 x 6.2 x 5.3 cm (cabinet)
Stokesite aggregate: 1.7 cm.


Stokesite is a relatively rare phosphate found only in about a dozen world localities, the best examples coming from the Urucum mine in Brazil. Most often, Stokesite specimens are single crystallized "spheres" off matrix. This piece is a very fine and rarely seen matrix specimen of Stokesite featuring a good sized, beige spherical aggregate which has grown on the underside/interior of a sharp, euhedral gemmy Smoky Quartz crystal. The Quartz obviously was separated at one point in time from the pocket wall, and a second fluid solution was introduced allowing the Stokesite to form on the underside of Quartz crystal. It is a most unusual and notable cabinet sized display specimen of this hard to find species. Stokesite is named after noted physicist George Stokes, for whom Stoke's Law of fluid mechanics is also named.

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Barite on Quartz from Jinkouhe, Sichuan Province, China [./worldwidemix110/barqtz110a.jpg] Barite on Quartz from Jinkouhe, Sichuan Province, China [./worldwidemix110/barqtz110e.jpg] Barite on Quartz from Jinkouhe, Sichuan Province, China [./worldwidemix110/barqtz110b.jpg] Barite on Quartz from Jinkouhe, Sichuan Province, China [./worldwidemix110/barqtz110c.jpg] Barite on Quartz from Jinkouhe, Sichuan Province, China [./worldwidemix110/barqtz110d.jpg]


No. BARQTZ110 - SOLD

Barite on Quartz

Locality: Jinkouhe, Sichuan Province, China

Specimen Size: 8.0 x 7.3 x 6.7 cm (small cabinet)
Largest Barite Crystal: 4.5 cm.


For a Barite and Quartz specimen, this is as aesthetic as it gets. An undamaged group of multi-terminated, chalk-white, broad, tabular crystals of Barite sit atop a "spray" of colorless, gem quality, prismatic Quartz crystals. The most attractive aspect of this piece is the fact that the Barite crystals have a distinctive "stripe" running down the prism face, and when backlit, actually allows one to view inside! The piece displays beautifully without a base or clay, and is without question the most aesthetic and salient specimens of this material that I have seen from this locality.



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Quartz (var: Smoky) (var: Quartz (var: Smoky) (var: Quartz (var: Smoky) (var: Quartz (var: Smoky) (var:


No. QTZGW110 - SOLD

Quartz (var: Smoky) (var: "Gwindel")

Locality: Puiva Mountain, Saranpaul, Prepolar Ural, Tyumenskaya Oblast', Urals Region, Russia

Specimen Size: 12.0 x 8.8 x 5.0 cm (cabinet)


Gwindels are some of the most unique and easily recognizable crystal forms in the mineral world. They are one of the many aspects of Alpine Quartzes that are so intriguing to collectors. The term "Gwindel" comes from the German word "gewunden" meaning twist, as the crystals that comprise every Gwindel show at least a small amount of angular rotation as though a stack of crystals had been twisted around a central pivot point to create the shape. Little is known about exactly how Gwindels form, but what is known is that they always form with the crystals growing parallel to the prism faces, with the c-axis lying horizontally. Some have suggested that Gwindels due to the piezoelectric quality that Quartz possesses, but this has only a theory. Also, Gwindels seem to only be able to form in slow crystal growing environments, sometimes taking millions of years to complete their growth. For a fairly short period in the 1990s, the locality at Puiva produced some of the finest quality Gwindels extant. This area is now defunct and non-operational, and from all accounts may not be reopened again for a very long time if ever. This piece is from the Russian Alpine collection of my father, Richard Kosnar, and remains one of the finest Russian Gwindels that I have encountered. It is an outstanding, large, sharp, highly lustrous, "Swiss" quality, museum display specimen with a highly desirable "smoky"-sherry color. The Gwindel itself is nearly flawless, especially from the aspect of GEM TRANSPARENCY as it is virtually water-clear throughout. Several smaller pale smoky Quartz crystals which are relatively perpendicular to the Gwindel constitute a quasi-matrix. For the size and quality, it is amazingly fine. I have seen only a handful of Russian Gwindels on par with this piece in my life, and it could easily be mistaken for a top shelf Swiss specimen, at which point the price could be as much as three times more. A shining example of how notable the Russian Gwindels truly are. A custom acrylic base for display is included with the specimen.



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Topaz (water clear !) from Xanda mine, Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Brazil [./worldwidemix110/top110a.jpg] Topaz (water clear !) from Xanda mine, Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Brazil [./worldwidemix110/top110b.jpg] Topaz (water clear !) from Xanda mine, Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Brazil [./worldwidemix110/top110c.jpg]


No. TOP110 - SOLD

Topaz (water clear !)

Locality: Xanda mine, Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Brazil

Specimen Size: 11.7 x 7.7 x 7.2 cm (cabinet)


The Xanda mine is one of the most prolific localities for blue Topaz in the world, and has produced some of the most impressive and memorable specimens with distinctive etching and larger sized crystals. This specimen is certainly a large Topaz from any locality, not just Brazil, and is in amazingly good condition for the size. The piece has some delicate and graceful hydrothermal etching along the sides of the prism, yet has a very well defined, large, glassy (041) face displayed prominently at the front of the specimen. Perhaps the most impressive aspect of this large crystal is the fact that it is nearly 100% GEM QUALITY with a gorgeous aqua blue color. Honestly, the entire crystal looks like a artfully sculpted piece of "blue ice". Rarely do the Topaz crystals from Xanda reach this size without serious etching, which can leave them as nothing more than etched pieces of gem rough, so to find a crystal in this condition is rather rare. A terrific natural blue Topaz specimen that is not priced anywhere near 5 figures.



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Beryl (var: Aquamarine) from Erongo Mountain, Usakos & Omaruru Districts, 140 km from Swakopmund, Erongo Region, Namibia [./worldwidemix110/aqua110a.jpg] Beryl (var: Aquamarine) from Erongo Mountain, Usakos & Omaruru Districts, 140 km from Swakopmund, Erongo Region, Namibia [./worldwidemix110/aqua110b.jpg] Beryl (var: Aquamarine) from Erongo Mountain, Usakos & Omaruru Districts, 140 km from Swakopmund, Erongo Region, Namibia [./worldwidemix110/aqua110c.jpg] Beryl (var: Aquamarine) from Erongo Mountain, Usakos & Omaruru Districts, 140 km from Swakopmund, Erongo Region, Namibia [./worldwidemix110/aqua110d.jpg]


No. AQUA110 - $ 6000.00 (=~ £ 4084.20)

Beryl (var: Aquamarine)

Locality: Erongo Mountain, Usakos & Omaruru Districts, 140 km from Swakopmund, Erongo Region, Namibia

Specimen Size: 11.4 x 8.9 x 4.3 cm (cabinet)
Largest Crystal: 6.4 cm.


ex.  Charlie Key


A very good sized (for the locality), sharp, glassy, rich blue to sky blue color, hexagonal prismatic crystal of Aquamarine with a few accenting lighter blue color crystals (which are partially water clear) sit atop a mound of porous, etched beige color Feldspar crystals. The Erongo region has recently produced some of the most striking and remarkable Aquamarine specimens in the last ten years. This piece is from the collection of world-famous mineral dealer, Charlie Key, and is certainly one of the finest I have encountered. The irrefutable nearly pristine quality of the piece is obvious from the onset, and the sheer aesthetic appeal make it a wonderful display specimen from this noted pegmatite region. If this piece were from Pakistan, it would certainly have a much higher value on it, and this is a great cabinet sized specimen for an excellent price. A custom made acrylic base is included with the specimen.

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Azurite (gemmy) with Malachite from Tsumeb mine, Tsumeb, Otjikoto Region, Namibia [./worldwidemix110/azur110b.jpg] Azurite (gemmy) with Malachite from Tsumeb mine, Tsumeb, Otjikoto Region, Namibia [./worldwidemix110/azur110d.jpg] Azurite (gemmy) with Malachite from Tsumeb mine, Tsumeb, Otjikoto Region, Namibia [./worldwidemix110/azur110c.jpg] Azurite (gemmy) with Malachite from Tsumeb mine, Tsumeb, Otjikoto Region, Namibia [./worldwidemix110/azur110a.jpg]


No. AZUR110 - SOLD

Azurite (gemmy) with Malachite

Locality: Tsumeb mine, Tsumeb, Otjikoto Region, Namibia

Specimen Size: 10.2 x 7.0 x 3.9 cm (cabinet)
Largest Crystal: 2.3cm


ex.  Ed David


Azurite from Tsumeb is among the most classic of all minerals, which a wide array of crystal habits and associations. This piece from the renowned collection of Dr. Ed David is one of the more interesting and unique Tsumeb Azurites that I know of. Some of the thick, HIGHLY lustrous, deep royal blue color bladed crystals on the specimen have unique stepped faces along the sides of the prisms, while some are completely smooth, and yet other have an almost "rounded" appearance. Several of the crystals exhibit the most electric blue color when backlit, and the reverse side of the specimen is coated with a blanket of forest-green, acicular Malachite crystals. Damage wise, this piece is in great shape, with only a tiny amount of edge wear that was obviously caused when the piece was removed from the pocket wall, but it amazingly completely crystallized on virtually all sides! A very attractive and worthwhile "hand sized" display specimen of this highly prized and now sparsely available material on the market.



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Quartz (var: Amethyst) (floater) from Goboboseb Mountain, Brandberg area, Uis District, Erongo Region, Namibia [./worldwidemix110/ameth110c.jpg] Quartz (var: Amethyst) (floater) from Goboboseb Mountain, Brandberg area, Uis District, Erongo Region, Namibia [./worldwidemix110/ameth110d.jpg] Quartz (var: Amethyst) (floater) from Goboboseb Mountain, Brandberg area, Uis District, Erongo Region, Namibia [./worldwidemix110/ameth110b.jpg] Quartz (var: Amethyst) (floater) from Goboboseb Mountain, Brandberg area, Uis District, Erongo Region, Namibia [./worldwidemix110/ameth110a.jpg] Quartz (var: Amethyst) (floater) from Goboboseb Mountain, Brandberg area, Uis District, Erongo Region, Namibia [./worldwidemix110/ameth110e.jpg]


No. AMETH110 - $ 3500.00 (=~ £ 2382.45)

Quartz (var: Amethyst) (floater)

Locality: Goboboseb Mountain, Brandberg area, Uis District, Erongo Region, Namibia

Specimen Size: 12.1 x 6.2 x 4.3 cm (cabinet)


A complete "floater" crystal group of beautiful purple Amethyst and colorless Quartz crystals with micro inclusions of bright red and metallic black iron oxide (erroneously identified by many as Lepidocrocite, but most likely Hematite). The internal royal purple color of the crystals, along with the noticeable and striking "phantoms" make it a very distinctive and showy piece of this now world famous material from the Brandberg area. I have searched the entire piece over, and cannot find a single point of contact, so it is about as perfect as it can be. The piece is notable to me as the crystals are single prisms and they do not show any skeletal faces or "scepters" as is often the case with this material. With the custom made acrylic base that accompanies the piece, it will display beautifully in your case.

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Dioptase from Morenci Mine, Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona [./worldwidemix110/diop110a.jpg] Dioptase from Morenci Mine, Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona [./worldwidemix110/diop110b.jpg]


No. DIOP110 - $ 1500.00 (=~ £ 1021.05)

Dioptase

Locality: Morenci Mine, Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona

Specimen Size: 11.1 x 6.6 x 5.3 cm (cabinet)


I have not encountered many Dioptase specimens from Morenci, and this piece is certainly the largest and richest piece of the material that I have owned to date. This "hand sized" display specimen is just filled with hundreds of electric green, sparkling, thin, prismatic crystals of Dioptase on a layer of pale blue-green Chrysocolla and forest-green Malachite on matrix. A true Arizona classic, and a very colorful, eye-catching piece of this well known material from south-eastern Arizona (near the New Mexico border).

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