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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Andradite (var. demantoid)
Andradite (var. demantoid)
Beryl
Beryl (var. heliodor)
Black Opal Ring
Corundum (var. sapphire)
Dark Jubilee Opal
Demantoid Bracelet
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Fluorites
Jeremejevite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal
Opal
Opal Peacock Brooch
Phosgenite
Tiffany Opal Necklace
Unusual Gems
Unusual Gems
Yowah Opal Nut
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