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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Peridot
Peridot
Peridot
Peridot gemstones
Perovskite
Platinum nugget
Pyrrhotite
Quartz
Quartz (var. amethyst)
Quartz with Fluorite
Russian beryls
Russian chrysoberyls
Sikhote-Alin
Sperrylite
Spessartine
Tiffany Amethyst Necklace
Titanite
Titanite
Titanite with calcite and adularia
Topaz Gems
Triplite
Unusual Gems
Unusual Gems
Väyrynenite
Zircon
Pagination
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