A group of exceptionally sized, translucent, and lustrous tabular crystals of metatorbernite (dehydrated torbernite). The green color displays aesthetical internal reflections. From this classic locality in the Katanga region. Accompanied by two antique labels. An exceptional miniature.

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Druse of tabular torbernite crystals from this classic mine for the species. Good luster, translucent to traansparent, and with a very intense green color.

95 €

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Druse of tabular torbernite crystals from this classic mine for the species. Good luster, translucent to traansparent, and with a very intense green color.

Small orange to yellow kasolite crystals, very aesthetic under magnification. They are disposed on a sandstone matrix with malachite. A Musonoi classic.

A very aesthetic specimen composed of very lustrous, dark green primary malachite crystals. The crystals have a triangular to rhombohedral appearance due to the way they have intergrown and are brighter green at the edges. It is quite rare to find primary malachite crystals, especially with well-defined crystals, and this mine is known for producing these malachites. The specimen was labeled "libethenite" (sic), and of course we analyzed it (analysis RM308), although a drop of HCl would have ruled out the phosphate, but...

130 €

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Malachite specimens from this mine typically appear without matrix. This specimen shows a botryoidal aggregate of intense green color arranged very airily on a quartz matrix. Very aesthetic.

These specimens come from the type locality for kolwezite, a copper-cobalt carbonate. Most of the "kolwezite" pieces seen on the market don't have the 1:1 Cu:Co ratio required to call them that; they usually have a 2:1 Cu:Co ratio. Of all the ones I've analyzed (and there are quite a few), even the olive-green ones maintain this ratio. In this case, we can say, to be honest, they're cobalt-rich malachite specimens. Even so, the specimens are very aesthetically pleasing. If I ever find a 1:1 Cu:Co kolwezite, I'll probably find the grail...

75 €

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These specimens come from the type locality for kolwezite, a copper-cobalt carbonate. Most of the "kolwezite" pieces seen on the market don't have the 1:1 Cu:Co ratio required to call them that; they usually have a 2:1 Cu:Co ratio. Of all the ones I've analyzed (and there are quite a few), even the olive-green ones maintain this ratio. In this case, we can say, to be honest, they're cobalt-rich malachite specimens. Even so, the specimens are very aesthetically pleasing. If I ever find a 1:1 Cu:Co kolwezite, I'll probably find the grail...

110 €

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Highly aesthetic botryoidal malachite aggregates completely covered by a layer of slightly greenish-blue chrysocolla. We can see the malachite, with concentric growths, in some fractures. The beauty of these specimens makes them worthy of the finest collection and display case.

Very aesthetic botryoidal malachite aggregates completely covered by a layer of blue chrysocolla. We can see the malachite, with concentric growths, in some fractures. The beauty of these specimens makes them worthy of the finest collection and display case.

Highly aesthetic botryoidal malachite aggregates completely covered by a layer of slightly greenish-blue chrysocolla. We can see the malachite, with concentric growths, in some fractures. The beauty of these specimens makes them worthy of the finest collection and display case.

Group of carrollite crystals showing cube and octahedron shapes. Very bright and interpenetrated with each other. Defined edges and faces and exceptional shine. Very aesthetic.

Group of carrollite crystals showing cube and octahedron shapes, along with tetrahexahedron shapes. Very bright and interpenetrated with each other. Defined edges and faces and exceptional shine. Very aesthetic.

160 €

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Carrollite is a copper cobalt sulfide, with the very finest of the species coming from the DR Congo. This excellent specimen is sharp, well-defined, and has a bright metallic luster. The single crystal is a modified cuboctahedron and accompanied by chalcopyrite crystals in calcite matrix. It has small nicks due to mechanical work to make the crystal appear that do not affect aesthetics. The condition and aesthetics both help make this such a choice display sample.

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Carrollite is a copper cobalt sulfide, with the very finest of the species coming from the DR Congo. This excellent specimen is sharp, well-defined, and has a bright metallic luster. The single crystal is a modified cuboctahedron and accompanied by chalcopyrite crystals in calcite matrix. The condition and aesthetics both help make this such a choice display sample.

Globular aggregates of kolwezite, light to intense green in color. They contrast on a matrix with cobalt-bearing calcite crystals.

Very aesthetic specimen that shows various globular and stalactitic aggregates of malachite, velvety and green color with zoning. Peppered by small malachite crystals, under the magnifying glass we can see that they are small transparent and defined crystals. In a matrix with goethite. From this classic Congolese locality for the species.

Colourful specimen of cobaltoan dolomite, with intense color, brilliance and translucent crystals. Very aesthetic. From the J. Astor collection (Barcelona).

Aggregates of metatyuyamunite crystals, with an intense yellow to orange colour, accompanied by malachite radial agregates and yellow laminar carnotite.

Very aesthetic specimen formed by several botryoidal aggregates of chrysocolla, with bluish green tones and very brilliant, peppered by prismatic crystals of malachite, transparent, bright and forming sheaves, which are accompanied by botroidal aggregates of intense black colour of heterogenite. A different piece of this classic mine.

In my opinion, among all known radioactive minerals, kasolite is the most aesthetic. It presents forms of elongated to tabular prisms, very well defined and sharp, many of them doubly terminated and of intense yellow color, even with some transparency. It is accompanied by guilleminite crystals of yellowish color. The matrix is partially covered by brilliant malachite. A aesthetic sample from a classic locality, to be observed with attention.

Very aesthetic specimen that shows globular aggregates of malachite, very bright and intense green. Also as velvety botryoidal aggregates. If you take a look under the magnifying glass, you will see that they are formed by several small crystals of this copper carbonate, transparent and defined. From this classic Congolese locality for the species.

Very aesthetic specimen that shows globular aggregates of malachite, very bright and intense green. If you take a look under the magnifying glass, you will see that they are formed by several small crystals of this copper carbonate, transparent and defined. From this classic Congolese locality for the species.

Very aesthetic stalactite of malachite, with an intense green color and a very aerial layout. Good size. From this classic Congolese locality for the species.

Rich aggregate of malachite crystals, brilliant, with an intense green color, which stand out on a matrix of blue-green chrysocolla. Very aesthetic