Rich group of microcline crystals, amazonite variety, showing defined faces and edges and a very aerial disposition. The color is quite good and very attractive. From an old Catalan collection.

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Agatized coral with marked bands. In a very visible coral matrix. Filled inside with botryoidal and banded chalcedony. The sparkly, translucent botryoids and banding have a pleasing variety of honey-brown and creamy colors. Very aesthetic and unusual in the marked. Fluoresces in a light-blue color under a long wave fluorescent light.

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Curious specimen of turquoise, authentic turquoise, of a slightly greenish blue color, forming globular and elongated nucleus, in a matrix of goethite with other phosphates as possibly strengite. It is slightly polished which allows us to see perfectly the forms that the phosphate takes inside the matrix.

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A really aesthetic green variscite specimen from the occurrence at Clay Canyon. The polished specimen hosts a whitish crandallite. Variscite is known from dozens of localities around the world, but the specimens from Utah are amongst the better pieces from the United States. The species is named for the German district of Variscia, which was the medieval name for modern-day Vögtland.

Good sized hydromagnesite specimens from this mine and with this quality are uncommon. On the rocky matrix, several globular aggregates of transparent crystals, with a white aspect. Brilliant and very rich specimen. Specimen originally in the collection of Hubin (Belgium).

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Very rich ramsdellite specimen, a rare manganese oxide, formed by several interpenetrated and some isolated groups of well defined crystals. Brilliance is really notable and on matrix. Ramsdellite from this small and defunct mine in a remote corner of Arizona was first found, in the early 1900s. However, the locality was apparently lost for some time and only rediscovered by the father/son team of Roy Jones and Dick Jones in the 1960s. These specimens are from a recent found in 2016.

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Very rich ramsdellite specimen, a rare manganese oxide, formed by several interpenetrated and some isolated groups of well defined crystals. Brilliance is really notable and on matrix. Ramsdellite from this small and defunct mine in a remote corner of Arizona was first found, in the early 1900s. However, the locality was apparently lost for some time and only rediscovered by the father/son team of Roy Jones and Dick Jones in the 1960s. These specimens are from a recent found in 2016.

Very aesthetic aggregates of lenticular azurite crystals forming these showy rosettes. Intense blue color. They are disposed very aerially on a matrix of malachite. No damage, perfect. A colorful classic of American mineralogy.

This specimen of baryte is one of the most aesthetic I've had to be sold... Added to its quality, the crystallographic "games" are more than interesting. It shows two barite crystals connected by a contact twin and sharing faces of different orders orthorhombic prisms. Very sharp faces and edges. With transparent to translucent zones and an exceptional brilliance. It preserve some of the original matrix. No damage. An exceptional specimen.

This huge size kernite specimen is formed by some glassy and translucent cleavage crystals. It is a rare borate, named after the namesake California county where it was discovered. It is extremely rare in sharp crystals. These crystals are not formed in the borate deposit itself, but rather in the tanks that are used to dissolve the borax. Every few years the tanks are shut down for maintenance. Kernite and primary tincalconite crystals are found growing on the large stirring blades and the walls of the tank. From the former Renaud Vochten collection (label will be send to the buyer).

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In this fine quality specimen we can observe several groups of galena crystals of good size, with defined faces and edges, and cube and octahedron faces. Very, very brilliant and disposed very aerial on the matrix. They are accompanied by another galena group showing the spinel twin and a pseudohexagonal shape. Partially covered by dolomite rhombohedrons. An aesthetic specimen that combines cubic crystals and twin. Amazing...

Several radial aggregates of tabular flattened weeksite crystals, of intense yellow color and transparency. Some of these aggregates are covered by chalcedony. With dendritic pyrolusite. They are accompanied by orange aggregates of carnotite crystals. It is a uranium-vanadium mineralization in fine-grained sedimentary and volcanic rocks. Analyzed specimen.

A specimen for systematic collectors... A large group of needle-like colorless crystals (prismatic) of artinite, forming aesthetic rosettes. But in this sample we highlight some aggregates of desautelsite crystals, a rare manganese and magnesium carbonate found in very few locations. They are orange crystals forming groups together with the artinite.

A specimen for systematic collectors... A large group of needle-like colorless crystals (prismatic) of artinite, forming aesthetic rosettes. But in this sample we highlight some aggregates of desautelsite crystals, a rare manganese and magnesium carbonate found in very few locations. They are orange crystals forming groups together with the artinite.

An excellent old classic from the American mineralogy. Really sharp crystals of hübnerite forming groups of parallel growths, some of them isolated. With the intense brown color and brilliance and an esthetic contrast with the snowy white matrix. Nowadays, it is very difficult to find specimens with this quality or any other quality...

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An aesthetic arborescent copper specimen with several defined crystals, with good brilliance an colour. From a former collection.

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In this specimen we can enjoy some willemite prismatic crystals with good size, included in a matrix of white calcite. Willemite usually presents yellow-green fluorescence under shortwave UV light. Calcite from Franklin also highlights for the intense red fluorescence. A very interesting piece.

Barrel-shaped crystals of pyromorphite forming a druse from this American classic locality. It consists of a rich group of very brilliant crystals, color varies from olive green to yellowish and orange, rounded forms. They are disposed on a matrix of goethite. It is very uncommon find these specimens in the mineral market.

Botryoidal aggregates of smithsonite with a very tastefull intense blue color, translucent and with some brilliance. They are partially covered by flattened calcite white crystals forming aesthetic rosettes. From a very interesting American locality.

An interesting specimen of native copper showing laminar aggregates included within a solid slate matrix. A very different than usual for the species and locality.

A huge size topaz crystal well disposed on the rhyolite matrix. It shows well defined faces and edges, excellent transparency and uniform toasted honey tone. It shows natural cleavage planes. A gem from a classic locality.

A very nice specimen from a classic American locality. A group of interpenetrated calcite crystals showing curvatures on their faces and edges. They are transparent to translucent and have a delicate yellow color with zonation. With small rhombohedral crystals of dolomite, peppered by microcrystals of chalcopyrite.

A very nice specimen from a classic American locality. A group of doubly terminated crystals showing parallel growth and curvatures on their faces and edges. They are translucent and have a delicate yellow color. With small rhombohedral crystals of dolomite, peppered by microcrystals of chalcopyrite.

Good sized specimen of native copper showing complex crystal faces, typical of these specimens, with good color, brilliance and aesthetics. This specimen is from the findings made in the mid-90 in this American mine. It has not been treated with chemicals, so its color and brightness are natural.

Good sized and aerial specimen of native copper showing curved crystal faces, typical of these specimens, with good color and aesthetics. This specimen is from the findings made in the mid-90 in this American mine. It has not been treated with chemicals, so its color and brightness are natural.