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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Pyrite with calcite
Pyrrhotite
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Russian beryls
Russian chrysoberyls
Scorodite
Sikhote-Alin
Sinuous Gypsum
Sperrylite
Spindle Bomb
Sylvanite
Tiffany Amethyst Necklace
Tlacotepec
Topaz
Topaz Gems
Wulfenite
Wulfenite
Pagination
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