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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Agate
Andradite (var. demantoid)
Andradite (var. demantoid)
Calcite
Calcite with duftite
Demantoid Bracelet
Descloizite in dolomite
Fluorites
Gypsum
Gypsum
Hemimorphite
Hoba
Hoba
Jeremejevite
Kyanite
Kyanite
Ludlockite with smithsonite
Malachite with azurite
Malachite with cuprite, quartz, and azurite
Mimetite
Nakhla
Peridot gemstones
Phosgenite
Pyrite with calcite
Quartz (var. agate)
Sinuous Gypsum
Smithsonite
Spessartine
Tennantite
Unusual Gems
Wulfenite
Wulfenite
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