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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Black Opal Ring
Blue Heart Diamond
Cullinan Blue Diamond Necklace
Dark Jubilee Opal
Fluorites
Kimberley Diamond
Marie Louise Diadem
Marquise Diamond Ring
Opal
Opal
Opal
Opal Peacock Brooch
Pearson Diamond
Portuguese Diamond
Ruby and Diamond Brooch
Shepard Diamond
Tiffany Opal Necklace
Unusual Gems
Unusual Gems
Victoria-Transvaal Diamond
Yowah Opal Nut
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