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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Attaway Ametrine
Bismuth
Dyber Ametrine
Hubnerite with quartz
Opal
Paravauxite
Phosphophyllite
Quartz (var. ametrine)
Quartz Gems
Rhodochrosite with quartz
Rhodonite
Southwest Sunset
Tetrahedrite
Unusual Gems
Vanadinite with romanechite
Vivianite with pyrite
Zircon with biotite and feldspar
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