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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
Beryl
Beryl (var. heliodor)
Bununu
Calcite
Calcite
Calcite
Carbo
Chrome Diopside
Corundum (var. sapphire)
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Fire Opal
Fire Opal
Fluorite
Galena with chalcopyrite, sphalerite, and others
Gypsum
Gypsum
Gypsum
Hemimorphite
Hemimorphite
Hologem Fire Opal Pendant
Mimetite
Nautilus Tourmaline Pendant
Nifontovite
Nigerian tourmalines
Nuevo Mercurio
Pagination
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