From Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Parallel formation of amethyst crystals with great transparency and rich purple color w...

From Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Parallel formation of amethyst crystals with great transparency and rich purple color w...

From Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Many lustrous purple amethyst quartz crystals scattered over one face of gray matrix. T...

From Tsumeb Mine, Otavi-Bergland District, Oshikoto, Namibia Cluster of several glassy anglesite crystals. The anglesite has a pale yellow color wi...

From Lonavala Quarry, Pune District, Maharashtra, India Lustrous transparent-to-translucent large green apophyllite crystals overgrown on matrix. T...

Pristine cluster of colorless apophyllite crystals. The crystals vary from milky white to water-clear at the terminations. this is a stalactitic fo...

From Deveti Septemvri Mine, Madan District, Rhodope Mountains, Bulgariaina Rare large specimen of crystals of arsenopyrite with quartz. The arseno...

From Bou Beker Mine, 21 km SSE of Oujda, Errachidia Province, Morocco An aesthetic specimen of flat disc shaped concretions of bright royal blue az...

From Tsumeb Mine, Otavi-Bergland District, Oshikoto, NamibiaComplex intersection cluster of Azurite crystals with areas altered to green malachite ...

From  Liufengshan Mine, Guichi, Anhui Province, China Lustrous translucent vibrant royal blue crystals of azurite partially lining a gossan matrix ...

Beautiful Brazilian banded agate with an exposed cavity, lined with lustrous colorless quartz crystals. Both sides polished to a high yield to a gl...

From Elk Creek, Meade County, South Dakota Classic specimen of several lustrous transparent golden-brown barite crystals on yellow calcite-coated m...

From Sterling Mine, Stoneham, Weld County, Colorado Cluster of intersecting transparent many prismatic blue barite crystals in sphalerite matrix. ...

From Machow Mine, Tarnobrzeg, Poland Diverging sprays of transparent, golden barite crystals on matrix with yellow iron. The barite crystals are el...

From Linópolis, Divino das Laranjeiras, Minas Gerais, BrazilLarge partial crystal of lustrous transparent-to-translucent aquamarine, the blue gem v...

From Huanggang Fe-Sn deposit, Hexigten Banner, Ulanhad League, Inner Mongolia, China   Large stalactitic formation of quartz covered by a second ge...

From Xianghualing Cassiterite Mine, 32 km north of Linwu, Hunan Province, China Large, museum-quality, cubic transparent blue fluorite crystals wit...

From Yaogangxian Mine, Nanling Mountains, Hunan Province, China   Transparent cluster of light green fluorite crystals with glassy crystal surface...

From Yaogangxian Mine, Nanling Mountains, Hunan Province, China   Transparent cluster of light green  blue fluorite crystals with glassy crystal s...

This fascinating specimen formed when gemmy calcite crystals grew in the natural pocket formed by a buried fossil clamshell. The interior of the sh...

This fascinating specimen formed when gemmy calcite crystals grew in the natural pocket formed by a buried fossil clamshell. The interior of the sh...

Xianghualing-Xianghuapu Mines, Hunan, China Unusual, unique one of a kind specimen of calcite on purple green fluorite. Cubic fluorite crystals in ...

From Bombay Quarry, Mumbai (Bombay), Maharastra, India Two large calcite on hemispherical formation of thin needle like colorless mesolite crystals...

From Edong Mining District, Daye, Hubei, China Large cluster of scalenohedral calcite with a secondary coating of lustrous iridescent metallic chal...