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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Attaway Ametrine
Bismuth
Conchita Montana Sapphire Butterfly
Cornetite
Corundum (var. sapphire)
Dyber Ametrine
Kyanite schist
Malachite
Malachite slab
Metatorbernite
Missouri River Sapphires
Montana Sapphires
Paravauxite
Phosphophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Rock Creek Sapphires
Schneider Tanzanite Ring
Southwest Sunset
Veszelyite
Vivianite with pyrite
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