From Casapalca District, Huarochiri Province, Peru Large lustrous striated cubic yellow-metallic pyrite crystals with black-metallic sphalerite cry...

 from Dalnegorsk, Primorskiy Kray, Russia   Large cabinet specimen of jet black sphalerite crystals in  compound groups of parallel crystals on mat...

From Elmwood Mine, Carthage, TennesseeLarge aesthetic cluster of highly lustrous black sphalerite crystals on a quartz coated matrix with micro gol...

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

From Madan District, Rhodope Mountains, Bulgaria Sculptural formation of lustrous yellow-metallic pyrite crystals with with dark Spinel-law twinned...

from Elmwood Mine, Carthage, Smith County, Tennessee Large plate lined with scintillating micro quartz crystals with isolated rosettes of  brillian...

From Elmwood Mine, Carthage, TennesseeSingle double terminated twinned crystal of rich golden calcite on matrix lined with metallic luster sphaleri...

Lustrous translucent red-brown sphalerite crystals in an elongated cluster perched on a thin slab of gray matrix coated with quartz microcrystals. ...

 from Dalnegorsk, Primorskiy Kray, Russia   Large cabinet specimen of a sparkling cluster of highly lustrous jet black sphalerite crystals in aggre...

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

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

Lustrous sparkling cluster of dolomite crystals from Morocco. Dolomite is part of the carbonate class of minerals and is know as a calcium magnesiu...

Lustrous sparkling cluster of dolomite crystals from Morocco. Dolomite is part of the carbonate class of minerals and is know as a calcium magnesiu...

Lustrous sparkling cluster of dolomite crystals from Morocco. Dolomite is part of the carbonate class of minerals and is know as a calcium magnesiu...

Lustrous sparkling cluster of dolomite crystals from Morocco. Dolomite is part of the carbonate class of minerals and is know as a calcium magnesiu...