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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Attaway Ametrine
Baryte with berthierite
Bismuth
Cronstedtite
Demantoid with serpentine
Dyber Ametrine
Gypsum with sulphur
Mezö-Madaras
Monazite
Paravauxite
Peridot gemstones
Phosgenite
Phosphophyllite
Platinum nugget
Quartz (var. ametrine)
Quartz Gems
Russian chrysoberyls
Southwest Sunset
Sulfur
Sylvanite
Tiffany Amethyst Necklace
Topaz Gems
Unusual Gems
Vigarano
Vivianite with pyrite
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