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. ...

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. ...

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

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

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

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

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

Lustrous transparent deep golden calcite crystal. Large double terminated scalenohedral twinned on the C-axis with well defined re-entrant faces, w...

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. ...

From Nasik District, Maharashtra, India Lustrous Large transparent yellow rhombohedral calcite crystal with textured striated crystal faces. Most o...

From Aurangabad, Maharashtra, India Large 5.75 inch pale-pink pseudomorph crystal of gem transparent calcite crystals coated with sparkling quartz ...

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

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

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

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

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

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 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. ...

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 manganoan calcite from Pakistan. This specimen is very well defined with beautiful banded concentric patterns...