From Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire)Complex cluster of lustrous pink translucent flattened rho...

From Quincy Mine, Hancock, Keweenaw Peninsula Copper District, Houghton County, MichiganLustrous translucent parallel scalenohedral calcite crystal...

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

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. ...

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

Massive twinned rhombohedral calcite crystals with rich orange to yellow color all throughout. Fully terminated with lustrous crystals faces with s...

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

A massive, 52 lb geode with large rhombic Calcite crystals beside a pseudomorphic quartz after Calcite crystals with pink Heulandite crystals in a ...

Large 6" penetrating twinned crystals of transparent rich golden yellow calcite with silky luster faces and sharp terminations on druzy quartz matr...

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...

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

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

Large aesthetic scalenohedral formation of rich deep golden calcite crystals in a parallel formation on matrix embedded with metallic sphalerite cr...

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

From Nasik District, Maharashtra, India Penetrating twinned crystals of transparent golden yellow calcite with silky luster faces and sharp termina...

Hand polished freeform of banded pink manganoan 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 Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaire) It is no surprise that minerals predominantely display co...

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

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

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

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