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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Adamite
Attaway Ametrine
Bismuth
Cornetite
Dyber Ametrine
Kermesite with senarmontite and dolomite
Magombedze
Paravauxite
Phosphophyllite
Quartz (var. ametrine)
Quartz Gems
Rhodochrosite with arsenopyrite
Southwest Sunset
Titanite
Unusual Gems
Vanadinite with romanechite
Vivianite with pyrite
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