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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Basalt drill core
Basalt drill core
Basalt drill core
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Eclogite
Fluorite with calcite
Fluorites
Kyanite schist
Missouri River Sapphires
Monazite
Montana Sapphires
Olivine-basalt drill core
Peridot gemstones
Peridotite xenoliths in basalt
Pyrite
Quartz (var. agate)
Quartz (var. agate)
Rock Creek Sapphires
Silver
Silver
Sphalerite
Sunstone
Unusual Gems
Veszelyite
Zircon with biotite and feldspar
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