Pyrite - Borieva Mine, Madan, Bulgaria
Pseudo-rhombohedral pyrite showing growth streaks and quite...
Pseudo-rhombohedral pyrite showing growth streaks and quite...
Pseudo-rhombohedral pyrite showing growth streaks and quite...
Pseudo-rhombohedral pyrite showing growth streaks and quite...
Very lightly amethysted sceptered quartz flower in perfect...
Superb and unusual association of short Uvs-reactive hyalite...
Superb and unusual association of short Uvs-reactive hyalite...
Well-expressed magnetite and zircon crystals on orthoclase.3 x...
Arsenopyrite crystal in very good condition and very bright on...
Vertical group of gold crystals forming a feather from the...
Native gold crystallized on quartz from the 2020-2021...
Vertical group of gold crystals on quartz from a relatively...
Nice little group of amethyst crystals from Mexico.2.5 x 2.4 x...
A group of amethyst crystals in perfect condition, with...
A group of amethyst crystals in perfect condition, with...
Nice little group of amethyst crystals from Mexico.2.5 x 1.5 x...
Beautifully sized, bright apophyllite crystals on basaltic...
Incomplete spinel octahedra on a white marble matrix, offering...
Plate composed of a multitude of white stilbite in good...
Group of translucent gypsum crystals from the former...
Well-crystallized, brilliant specimen of skutterudite from...
Brazilian copper-bearing rutile stone.1.6 x 1.3 x 0.8 cm
Small piece composed of several wavellite spheres of different...
Small piece composed of several wavellite spheres with two...
Aerial group of shiny epidote crystals.3 x 1.5 x 1.3 cm
Botryoidal quartz, commonly called "agate grappe", with a...
Botryoidal quartz, commonly called "agate grappe" has a lovely...
Botryoidal quartz, commonly known as "agate grappe", has a...
Botryoidal quartz, commonly called white "Agate grappe" (the...
Small, deep-orange calcite scalenohedrons on basalt. Calcite...
Bright, pseudo-cubic green apophyllite crystals on basaltic...
Group of very bright smoky quartz from Australia.4.5 x 2.8 x 2 cm