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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Apatite
Apatite
Calcite
Demantoid Bracelet
Diaspore
Diopside
Elbaite
Emerald Carving
Enstatite
Fire Opal
Fluorite
Hydroxylherderite
Kyanite
Nigerian tourmalines
Opal
Phosgenite
Quartz (var. amethyst)
Quartz (var. amethyst)
Rhodonite
Rutile
Scapolite
Scapolite
Spessartine
Titanite
Topaz
Topaz
Triplite
Tugtupite
Väyrynenite
Whitney Flame Topaz
Zoisites
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