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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Agate
Aurichalcite with hemimorphite
Azurite
Beryl
Calcite
Gypsum
Gypsum
Gypsum
Hemimorphite
Mimetite
Missouri River Sapphires
Opal in matrix
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Purple agate
Pyrite with calcite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Rock Creek Sapphires
Scorodite
Sinuous Gypsum
Veszelyite
Wulfenite
Wulfenite
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