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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Albite (var. moonstone)
Amazonite
Apophyllite with prehnite
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Demantoid with serpentine
Dolerite
Gypsum with sulphur
Kyanite after andalusite
Kyanite schist
Missouri River Sapphires
Montana Sapphires
Phosgenite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz Gems
Rock Creek Sapphires
Stalagmite
Staunton
Sulfur
Unusual Gems
Veszelyite
Vigarano
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