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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
Fluorite
Kyanite schist
Lafayette
Lafayette
Malachite
Malachite slab
Marcasite
Metatorbernite
Missouri River Sapphires
Montana Sapphires
Paravauxite
Pearl and Peridot Haircomb
Phosphophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Rock Creek Sapphires
Southwest Sunset
Veszelyite
Vivianite with pyrite
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