Specimens

Pohla Mine, Erzgebirgskreis, Saxony, Germany

Ratnapura, Sri Lanka

Spinel

Tete Province, Mozambique

Minas Gerais, Brazil

Chrysoberyl

Hidalgo, Chihuahua, Mexico

Stibnite

Shelby, North Carolina, USA

Muscovite

Mt. Diablo Mine, Clayton, Contra Costa Co., California, USA

Metacinnabar

Jaipur District, Rajasthan, India

Diopside

Riedel Potash Works, Hänigsen, Uetze, Hanover Region, Lower Saxony, Germany

Boracite

Pena Blanca Mine, San Pablo de Borbur, Boyaca Department, Colombia

Calcite, Quartz

Iron Cap Mine, Graham Co., Arizona, USA

Sphalerite

Grimsel, Switzerland

Quartz

Stak Nala, Skardu, Pakistan

Quartz

Stak Nala, Skardu, Pakistan

Quartz

Minas Gerais, Brazil

Guanajuato, Mexico

Polybasite

Bisbee, Cochise Co., Arizona, USA

Copper

Bisbee, Cochise Co., Arizona, USA

Copper

Rio Marina, Elba Island, Italy

Pyrite, Hematite

Rapid Creek, Yukon, Canada

Lazulite, Quartz

Tsumeb, Namibia

Bisbee, Cochise Co., Arizona, USA

Copper, Cuprite

Tsumeb, Namibia

Mimetite

Miami, Gila Co., Arizona, USA

Azurite, Allophane

Freiberg, Saxony, Germany

Stephanite