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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Orthoclase
Owl Brooch
Pearl and Diamond Ring
Peekskill
Peridot gemstones
Pyromorphite
Quartz
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz Gems
Quartz with Fluorite
Royal Butterfly Brooch
Sherman Diamond
Sokol Diamond Necklace
Spessartine
Spinel peridotite
Spodumene (var. hiddenite)
Thompson Diamonds
Tiffany Diamond and Ruby Bracelet
Tiffany Diamond Bracelet
Tiffany Opal Necklace
Titanite
Titanite
Topaz Gems
Turquoise carving
Unusual Gems
Unusual Gems
Wilkinson Diamond Brooch
Wilkinson Diamond Ringdant
Winston Adamantine Pearl
Yowah Opal Nut
Zagami
Zircon
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