Dioptase - Brazzaville, Republic of the Congo
Dioptase crystals of respectable size (up to 2.1 cm) for the...
Dioptase crystals of respectable size (up to 2.1 cm) for the...
Small “feather” of native copper with an atypical skeletal...
Native copper with an atypical skeletal structure, due to...
Adorable association of small calcite, siderite and quartz...
Gypsum in excellent condition, very fine quality, with...
Small, bright blue apatite crystals in barrelets associated...
Sphalerite crystal in perfect condition and of good size (1.5...
Azurite composed of numerous brilliant crystals set in...
Epitaxial hematite and rutile. Piece from a discovery of a few...
Rare twinned diaspore crystals, both with very good...
A specimen composed of several quartz crystals, one of which...
Hyalite opal crown on basalt, in perfect condition, showing a...
A rare find! Superb star rutile floating in epitaxy around...
Rare acanthite crystals of beautiful size and brilliance, from...
Very architectural set of rare acanthite crystals of a...
Azurite in discoidal crystallization of 5,7 x 4,5 cm on white...
Superb bouquet of fine aquamarine crystals, as if "frosted" at...