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Smithsonian National Museum of Natural History
GeoGallery
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Agate
Ahumada
Alexandrites
Andradite (var. demantoid)
Andradite (var. demantoid)
Azurite
Basalt
Basalt bomb
Calcite
Calcite
Calcite
Carbo
Chrome Diopside
Fire Opal
Fire Opal
Galena with chalcopyrite, sphalerite, and others
Gypsum
Gypsum
Gypsum
Hemimorphite
Hemimorphite
Hologem Fire Opal Pendant
Imilac
Imilac
Mern
Mimetite
North Chile
Nuevo Mercurio
Opal (var. hyalite)
Opal in matrix
Opals
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Perovskite
Platinum nugget
Proustite cross (NMNH 12829-00)
Pagination
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