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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Attaway Ametrine
Beryl (var. emerald)
Bismuth
Calcite on galena
Cape York
Cobaltite
Dyber Ametrine
Ethiopian Opals
Folded anorthosite
Georgina Emerald
Halite
Halite
Opal
Opal
Opal
Opal
Opal
Paravauxite
Phosphophyllite
Quartz (var. ametrine)
Quartz Gems
Southwest Sunset
Tugtupite
Vivianite with pyrite
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