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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Afghanite with calcite
Bastnäsite with quartz
Conchita Montana Sapphire Butterfly
Corundum (var. ruby)
Corundum (var. sapphire)
Elbaites
Fluorite
Fluorites
Harriman
Kyanite schist
Limestone with chert
Missouri River Sapphires
Montana Sapphires
Opal
Opal bone
Picasso Kunzite Necklace
Pollucite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quinn Canyon
Rock Creek Sapphires
Roebling Opal
Sandstone
Veszelyite
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