Very defined barite crystal, with shapes of different orthorhombic prisms truncated by pinacoidal faces. The transparence is excellent. From this classic Moroccan mine for baryte crystals.

Very aesthetic lustrous and translucent crystals of this rare lithium-rich red mica, ephesite. This specimen, from the famous Postmasburg finds on a farm in the early 1980s, shows tabular micaceous shape, showing the classic hexagonal cross-section of mica. Translucent to transparent, excellent color. A good representative for the species.

Very good size specimen of dioptase. It is a druse of small but very bright and defined crystals. They stand out from the matrix. From a classic town like Tsumeb. *Getting a camera to extract the color of dioptase is an arduous task...

290 €

Buy

Good size crystal of pleonast, a variety of spinel containing Fe²⁺. It shows complex crystalline forms of the octahedron and combinations of the octahedron with the dodecahedron or, more rarely, with those of the cube. A museum size piece, very rare to get.

Strüverite is a variety of rutile rich in tantalum and iron, with the formula (Ti,Ta,Fe)O₂, with variable proportions of niobium (Nb). When the proportion of Ta>Nb is called strüverite, but if Nb≥Ta the variety has been named ilmenorutile. The specimens from this locality in Madagascar have been mainly determined to be of the Ta-rich variety: strüverite. An interesting specimen with a very special chemistry.

Sold

This specimen comes from unique find made at Tizi n’Ouazane pass in High Atlas, Morocco. This small find yielded specimens of feldspars with aegirines overgrown by unusual, contrastive yellow zircons, chamosite, magnetite and andradite. But what is the most unusual in this find is presence of the fluorcalciopyrochlore at some specimens. This specimen shows a elongated group of aegirine crystals with a good size (on 7 cm., the biggest size found) with perfect defined terminal faces. They are accompanied by yellow zircon crystals, with classic tetragonal forms, with prism and single dipyramide, very bright yellow color, creating a great contrast on the dark aegirines. Also some zircon crystals, with very short prism and dominating pyramids. Fluorescent under UV light. Titanite is brown elongated crystals. Fluorocalciopyrochlore occurs as octahedral crystals. A really unique specimen.

800 €

Buy

These hematite crystals from a quarry near Nador are already a classic of Moroccan mineralogy. This specimen is made up of various crystals in parallel growth, with exceptional brilliance, and showing the faces of different crystals. Its size and quality and metallic luster make them a definitive specimen from this locality. These hematites come from a small rhyolite quarry very near the community of Nador, on the road to Melilla.

150 €

Buy

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 €

Buy

Excellent, pure aesthetics. It is a group of arfvedsonite crystals of intense black color, shiny, with defined and shiny faces, arranged on a matrix of feldspar, orthoclase. From the Nicolau collection (Barcelona), with a handwritten label by Joan Viñals.

Sold

Cluster of aragonite crystals, very bright and defined. They are known in the area as "sputnik stones" (sic) because of their appearance. They present a color zoning on the surface, between gray and brown. They are floating. A Moroccan curiosity.

Cluster of aragonite crystals, very bright and defined. They are known in the area as "sputnik stones" (sic) because of their appearance. They present a color zoning on the surface, between gray and brown. They are floating. A Moroccan curiosity.

Pineapple cluster of aragonite crystals, with transparence, very bright and defined. They are known in the area as "sputnik stones" (sic) because of their appearance. They present a color zoning on the surface, between gray and brown. They are floating. A Moroccan curiosity.

Cluster of aragonite crystals, very bright and defined. They are known in the area as "sputnik stones" (sic) because of their appearance. They present a color zoning on the surface, between gray and brown. They are floating. A Moroccan curiosity.

Globular aggregates of white acicular crystals with a silky luster of oyelite, a rare calcium borosilicate, which are accompanied by very brilliant, transparent and well-defined calcite crystals. Nowadays these specimens are quite difficult to be found. It belongs from the Nicolau collection (Barcelona) and it is accompanied by the handwritten label.

Sold

Contrasting sparkly dolomite matrix are lustrous, dark green spheres to 1 mm across, of conichalcite. This is an uncommon, calcium, copper arsenate and it is rare in the form of such isolated crystals or crystal aggregates as you see here (forming little ball-shaped growths).This aesthetic specimen is double sided.

Very elongated quartz crystal, very rich in faces, with excellent transparence. Rock crystal...

Very elongated quartz crystal with a very uniform and aesthetic smoky tone. Defined faces and edges and good transparence.

Excellent specimen formed by numerous colorless acicular crystals of bultfonteinite, a rare hydrated calcium fluorosilicate, which is accompanied by beige prismatic crystals of olmiite, a hydroxysilicate of calcium and manganese. The specimen is very representative of these species. This is the type locality for olmiite. We include pooldervaartite because it is very common since it forms a series with olmiite.

240 €

Buy

Rich group of prismatic crystals of gaudefroyite, a rare calcium and manganese borate-carbonate, with an intense black color. They are accompanied by brilliant hematite crystals, along with barite, calcite and orange andradite.

Sold

This specimen is totally different from those that we usually see in the market of this Moroccan locality. The matrix is a group of quartz crystals, with a soft amethyst tone, and partially covered with chalcedony, in tiny, shiny crystals. On this matrix there is a large group of goethite crystals, lanceolate, dark brown in color and also covered with chalcedony. But millimeter quartz crystals stand out above them, most of them doubly terminated. I had never seen specimens that looked like this. Very interesting.

A defined fluorite cubic aggregate, echeloned growths with absolutely striking green and purple phantoms inside the otherwise glassy crystals. Cubes are lustrous on all sides and free of any considerable damage. The interior is quite fascinating as is characteristic for the Okorusu Mine. This cluster of fluorite is very aesthetic and typical for the locale.

Highly lustrous, rounded faces, jet-black spinel octahedrons included in a calcite matrix from this less well-known locality. Crystals of this size and quality are rare from here and this is a fine and good sized specimen from the E. Nicolau (Barcelona) Collection.

Radial aggregates of needle like erythrite crystals. They stand out from the goethite matrix.

Radial aggregates of needle like erythrite crystals. They stand out from the goethite matrix.