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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Banded iron formation
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Eclogite
Kyanite schist
Missouri River Sapphires
Monazite
Montana Sapphires
Olivine-gabbro
Peridot gemstones
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Rock Creek Sapphires
Silver
Silver
Sunstone
Veszelyite
Zircon with biotite and feldspar
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