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

From Chenzhou Prefecture, Hunan Province, China Translucent pale-pink crystals of sharp flattened rhombohedral manganoan calcite in parallel format...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display co...

Lustrous transparent deep golden calcite crystal on matrix. Large double terminated scalenohedral twinned crystals with sub parallel growth faces. ...

From Nasik District, Maharashtra, India Large translucent twinned crystals of calcite on translucent to transparent apophyllite crystal cluster mat...

From Leiping Mine, Guiyang, Hunan, China Internally flawless crystal cluster of optical-grade colorless calcite on gossan matrix. The calcite cryst...

From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display co...

Hand polished freeform of banded pink mangano calcite from Pakistan. This specimen is very well defined with beautiful banded concentric patterns. ...

From Leiping Mine, Guiyang, Hunan, China Internally flawless crystal cluster of optical-grade colorless calcite on gossan matrix. The calcite cryst...

Lustrous transparent deep golden calcite crystal on small sphalerite matrix. Large double terminated scalenohedral twinned on the C-axis with well ...

Lustrous transparent deep golden calcite crystal on small sphalerite matrix. Large double terminated scalenohedral twinned on the C-axis with well ...

Large, museum-quality, lustrous transparent deep golden calcite with small sphalerite crystal at the base of the crystal. Double terminated scaleno...

From Guilin Prefecture, Guangxi Zhuang Autonomous Region, China Aesthetic stalactitic formation of translucent tanish-orange scalenohedral calcite ...

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

Hand polished freeform of banded pink manganoan calcite from Pakistan. This specimen is very well defined with beautiful banded concentric patterns...

From Yaogangxian Mine, Nanling Mountains, Hunan Province, China   Large specimen of pale-yellow scalenohedral calcite on a bed of micro calcite cry...

Hand polished freeform of banded pink mangano calcite from Pakistan. This specimen is very well defined with beautiful banded concentric patterns. ...

Hand polished freeform of banded pink mangano calcite from Pakistan. This specimen is very well defined with beautiful banded concentric patterns. ...

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

From Alimon Mine, Huaron, Cerro de Pasco, Peru Large formation of metallic chalcopyrite crystals overgrown on lustrous jet black sphalerite accente...

Lustrous transparent deep golden calcite crystal on matrix. Large double terminated scalenohedral twinned on the C-axis with well defined re-entran...

Lustrous transparent deep golden calcite crystal on sphalerite matrix, double terminated scalenohedral twinned on the C-axis with well defined re-e...

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

Large, museum-quality, lustrous transparent deep golden calcite with small sphalerite crystal at the base of the crystal. Double terminated scaleno...