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Mineral Specimens

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13 specimens listed
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Cuprite with Malachite
stock #20.1-318-(LW494)
Kambove
Haut-Katanga Province, Democratic Republic of Congo (Zaire)
2.4 x 2.3 x 1.3 CM (thumbnail)
price: $90


A cluster of dark red Cuprite crystals with tufts of fibrous Malachite. Some minor contacting on the back but the front and sides are quite fine with no visible damage. The Cuprites are translucent and if backlit will glow to a bright cherry-red. A nice thumbnail from a modern classic locality.
Cuprite with Native Silver
stock #10.1-086
Rubtsovsky Mine, Rubtsovshy District
Altaiskii Krai, Russia
4.6 x 4.6 x 4 CM (miniature)
price: $780


Just over a decade ago the incredible discovery of fantastic large Cuprites from Rubstovsky (Russia) was huge news in the mineral world. This is an especially choice example of a fine undamaged Cuprite with the addition of having Native Silver on some areas. Even without the Silver this is a super Cuprite, it has excellent form and luster, is in fine condition and with good lighting the inner red colors are seen on some edges and faces. This piece was found in the early discoveries, it is of a style and quality that is no longer coming out (the find may have been exhausted but there are still some coming from dealers storage). The bright luster makes this hard to show well in photos, it is far better in person and very fine for the discovery.
Cuprite -Large complex crystal on Malachite
stock #0739-JM-1693
Dikuluwe Mine, Kolwezi
Shaba, Democratic Republic of Congo (Zaire)
7 x 6.6 x 3.8 CM (cabinet)
price: $880
Spring update

A large, somewhat crude red Cuprite octahedron (3.5 CM) with some unusual growth features and complex faces sets nicely on Malachite matrix. Two of the faces have odd holes (one circular, one triangular) and several parts of the crystal show stepped regrowths. Great color contrast, with backlighting the Cuprite glows a brilliant cherry red. We have not backlit the specimen as that can be misleading, but the cuprite is fully translucent and seems to be facet grade clear red inside. Ex John Marshall collection (his label and card are included) acquired in 1990 from G. Gauthier.
Cuprite with Malachite, Plancheite etc.
stock #17.1-702
Mashamba West Mine, Kolwezi, Katanga Copper Crescent
Katanga (Shaba), Democratic Republic of Congo (Zaire)
5.8 x 3.7 x 3.4 CM (cabinet)
price: $460
Pre Holiday 2017

Big, dark red and lustrous Cuprite Octahedrons are nestled in light blue Plancheite and dark green Malachite. Fine contrast, esthetics and in very good condition. The backside is contacted but not damaged, pitting and face voids are natural some with Plancheite inside. Individual octahedrons are up to 1.8 CM, some with nice edge modifications quite rare at this locale. These have not been coming out for almost a decade. Choice.
Cuprite- gemmy red crystals
stock #16.1-640
Milpillas Mine, Cuitaca, Municipio de Santa Cruz
Sonora, Mexico
6 x 4.4 x 1.7 CM (cabinet)
price: $520
Pre Holiday 2017

A well formed, bright stack of Cuprite crystals from the great Milpillas mine, better known for world class Azurites. This find of Cuprites created a big stir 2 years ago, but few were undamaged or had crystals much over a few millimeters. This piece is far better than average, in excellent condition damage wise and the crystals are stacked in an esthetic epitaxial arrangement. These octahedrons all will glow bright red with focused light passing through them, the photos here are only made with typical display lighting, so as not to be misleading. When these were first found the prices being charged were incredibly high, this is a lot more reasonable, yet a fine quality piece, by comparison a really good value.
Cuprite - large well-crystallized mass
stock #16.1-355
Red Dome Mine, Chillagoe, Tablelands Region
Queensland, Australia
7.8 x 6.2 x 3.8 CM (cabinet)
price: $460
Spring 2017

A sizable pure mass of Cuprite, nearly all crystallized with individual crystals reaching 1.5 CM. A few small vugs have some hairy Cuprite var. Chalcotrichite, in excellent condition overall, this is a rich specimen from a classic locality. Better in person.
Cuprite (gem) w. Plancheite
stock #12.1-167
Kolwezi, Katanga Copper Crescent
Katanga (Shaba), Democratic Republic of Congo (Zaire)
5.5 x 4.3 x 3.2 CM (cabinet)
price: $280
Winter 2016-17

Sharp Cuprites to 1.8 cm are set nicely on a contrasting Malachite and Plancheite matrix. Some natural pitting on the back side but no real damage, the Cuprites are all bright translucent red when backlit. A good value and no longer available.
Cuprite var. Chalcotrichite with Malachite
stock #12.1-208
Changmenshan Copper Mine, Jiulang
Jiangxi Province, China
7.2 x 5.6 x 4.3 CM (cabinet)
price: $575
pre Tucson 2015 update

Electric red crystals of Chalcotrichite in characteristic hair-like form are densely clustered in and near a protective vug. Great display quality for such a delicate mineral. This was found over 7 years ago, we have not seen new material from this locale since. Crystals reach well over 1 CM and are gem clear under magnification. This can be shipped (with insurance and special packaging) or delivered in person at a show or elsewhere. Please write us for details.
13 specimens listed
Page   1 | 2 |