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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Agate
Ahumada
Azurite
Basalt
Beryl
Beryl (var. emerald)
Beryl (var. heliodor)
Bununu
Calcite
Calcite
Calcite
Carbo
Corundum (var. sapphire)
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Ethiopian Opals
Fire Opal
Fire Opal
Georgina Emerald
Gypsum
Gypsum
Gypsum
Hemimorphite
Hemimorphite
Hologem Fire Opal Pendant
Limestone with chert
Mimetite
Muscovite schist
Nautilus Tourmaline Pendant
Nigerian tourmalines
Nuevo Mercurio
Opal
Opal
Opal
Pagination
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