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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Amblygonite
Apatite
Calcite
Cullinan Blue Diamond Necklace
Diopside
Elbaite
Elbaite
Emerald Carving
Enstatite
Fluorite
Fluorite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal
Phosgenite
Quartz
Quartz (var. amethyst)
Rhodonite
Royal Butterfly Brooch
Rutile
Scapolite
Titanite
Topaz
Topaz
Tugtupite
Väyrynenite
Whitney Flame Topaz
Yowah Opal Nut
Zircon
Zircon
Zircon
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