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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Freedom Diamond
Hemimorphite
Jadeite Pendant
Johnstown
Kyanite schist
Kyanite with biotite
Manganoan calcite
Microcline (var. amazonite)
Midnight Dreamscape
Migmatite
Missouri River Sapphires
Montana Sapphires
Mystery Diamond
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Rock Creek Sapphires
Spinel peridotite
Thompson Diamonds
Veszelyite
Weston
Winston Adamantine Pearl
Zircon (var. cyrtolite)
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