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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Alexandrites
Andradite (var. demantoid)
Andradite (var. demantoid)
Basalt bomb
Beryl
Beryl (var. heliodor)
Bununu
Chrome Diopside
Corundum (var. sapphire)
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Galena with chalcopyrite, sphalerite, and others
Kyanite with biotite
Limestone with chert
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal bone
Perovskite
Platinum nugget
Pyrrhotite
Quartz (var. amethyst)
Quinn Canyon
Roebling Opal
Rose City
Russian beryls
Russian chrysoberyls
Sandstone
Sikhote-Alin
Sperrylite
Tiffany Amethyst Necklace
Topaz Gems
Weston
Zagami
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