Sphalerite and galena - Borieva mine, Madan, Bulgaria
Sphalerite crystal in perfect condition and of good size (1.5...
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Sphalerite crystal in perfect condition and of good size (1.5...
Specimen composed of several ‘molten’ galena crystals...
Small, deep-orange calcite scalenohedrons on basalt. Calcite...
Bright, pseudo-cubic green apophyllite crystals on basaltic...
Azurite composed of numerous brilliant crystals set in...
Phantom smoky quartz from an unusual locality.2.8 x 1.5 x 1.6 cm
Cubes of green fluorite combined with quartz on calcite.5 x...
Small, almost colorless specimen of Italian fluorite.2.5 x 2.4...
Small, almost colorless specimen of Italian fluorite.3.4 x 2.5...
Small sample of azurite very big for the locality !1.2 x 1.1 x...
Magnetite crystals on serpentine gangue from the former La...
Small fluorite specimen from an unusual locality.3 x 2.2 x 2 cm
Small sample of azurite of very good quality and big size for...
Yellow fluorite cubes with pyrite micro-crystals.3.4 x 2 x 1.5 cm
Small, very bright, gem-quality crystals of blue apatite on...
Dark green tourmaline crystal on pink/purple lepidolite. 3.6 x...
Translucent flat quartz associated with small orange calcite...
A high quality translucent axinite crystal accompanied by a...
Hyalite opal on basalt, in perfect condition, showing a very...
This piece is made up of very shiny red sphalerite,...
Botryoidal quartz, commonly called "cluster chalcedony"...
Small quartz specimen, including a clearly visible Japan law...
Brilliant, well-formed pyrite dodecahedra, showing growth...
Epitaxial hematite and rutile. Piece from a discovery of a few...
Rare twinned diaspore crystals, both with very good...
Piece grouping several gemmy, brilliant axinite crystals (up...
Small shiny hematite flakes on dolomite.8.5 x 6 x 5 cm
Small block of bright, surface-crystallized pyrite from the...
Bright, translucent epidote crystals associated with...
A turquoise-blue chrysocolla plate that has pseudomorphosed a...
Bright, well-formed, deep-green demantoid garnets in very good...