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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Malachite with azurite
Malachite with cuprite, quartz, and azurite
Marquise Diamond Ring
Nautilus Tourmaline Pendant
Nigerian tourmalines
Oppenheimer Diamond
Pearson Diamond
Peridot
Peridot
Peridot
Peridot gemstones
Phosgenite
Portuguese Diamond
Rhodochrosite
Ruby and Diamond Brooch
Shepard Diamond
Smithsonite
Spessartine
Sugilite
Tennantite
Tetrahedrite
Titanite with calcite and adularia
Triplite
Unusual Gems
Unusual Gems
Väyrynenite
Victoria-Transvaal Diamond
Wulfenite
Zagami
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