From Madan District, Rhodope Mountains, Bulgaria Sculptural formation of lustrous yellow-metallic pyrite crystals with Sphalerite. The pyrite cryst...

Isolated crystal aggregates of large tabular metallic bronze colored pyrrhotite crystals on matrix covered with flattened rhombic form calcite micr...

From Alto de Cruces, Suaita, Santander, Colombia Authentic, cluster of many intersecting lustrous transparent colorless quartz crystals. The quartz...

From Diamantina, Minas Gerais, Brazil Large transparent colorless quartz crystals with surfaces composed of many smaller parallel crystal faces. In...

Huge, museum-quality, Himalayan quartz generator crystal, sitting on a large, white Feldspar crystal, both perfectly terminated with top luster. Th...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

This Quartz stalactite slice from Southern Paraná Basalt Basin, Artigas, Uruguay features a beautifully banded cross section. This polished slice i...

From Guilin, Guanxi Zhuang, China Transparent yellow quartz citrine quartz crystals with smoky phantoms at the termination. Dominated by a large si...

From Guilin, Guanxi Zhuang, China Huge cluster of elongated citrine quartz crystals. Transparent yellow quartz citrine quartz crystals with smoky p...

From Guilin, Guanxi Zhuang, China Huge cluster of elongated citrine quartz crystals. Transparent yellow quartz citrine quartz crystals with smoky p...

From near Pantai Manakarra, Mamuju, Sulawesi, Indonesia   Double-sided cluster of translucent grape purple quartz agate in spherical formations wit...

From near Pantai Manakarra, Mamuju, Sulawesi, Indonesia Double-sided cluster of translucent grape purple quartz agate in spherical formations with ...

From near Pantai Manakarra, Mamuju, Sulawesi, Indonesia Double-sided cluster of translucent grape purple quartz agate in spherical formations with ...

From near Pantai Manakarra, Mamuju, Sulawesi, Indonesia Double-sided cluster of translucent grape purple quartz agate in spherical formations with ...

Dodo Mine, Polar Urals, Tyumenskaya Oblast', Russia Light smoky colored gwindel formation of transparent quartz. This specimen is fully crystallize...

From Huanggang Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia, China Several intersecting doubly terminated quartz crystals colored green by inclusi...

From Deveti Septemvri Mine, Madan District, Rhodope Mountains, Bulgaria Sparkling cluster of lustrous translucent gray quartz crystals overgrown on...

From Tekhdi, Madhya Pradesh, India Lustrous transparent purple parallel Quartz Var. crystals with red hematite encrusted phantoms inside water clea...

Red Quartz Hematite crystal cluster from Izizauen Alnif, Tarhbalt, Morocco. Cylindrical stalactite of calcite crystals mixed with red hematite.  He...

Red Quartz Hematite crystal cluster from Izizauen Alnif, Tarhbalt, Morocco. Cylindrical stalactite of calcite crystals mixed with red hematite.  He...