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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Peridot
Peridot
Peridot gemstones
Proustite cross (NMNH 12829-00)
Purple agate
Pyrite with calcite
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Scorodite
Sinuous Gypsum
Spindle Bomb
Spinels
Titanite with calcite and adularia
Tlacotepec
Topaz
Triplite
Väyrynenite
Wulfenite
Wulfenite
Pagination
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