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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Amphibole-rock
Cafarsite
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Elbaites
Fluorite with quartz
Fluorites
Garnetiferous schist
Granite
Granite block
Havey Tourmaline
Kyanite schist
Kyanite schist
Magnetite
Milarite with chlorite
Missouri River Sapphires
Montana Sapphires
Orthoclase (var. adularia)
Pegmatite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz)
Quartz Gems
Rock Creek Sapphires
Siderite
Staurolite schist
Veszelyite
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