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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Adamite
African Gems
Apatite
Basalt drill core
Basalt drill core
Basalt drill core
Beryl (var. heliodor)
Clinohumite
Corundum (var. ruby)
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite Carving
Grossular (var. tsavorite) and Elbaite
Limestone with chert
Olivine-basalt drill core
Opal
Opal bone
Peridotite xenoliths in basalt
Quartz (var. amethyst)
Quinn Canyon
Rhodochrosite with arsenopyrite
Roebling Opal
Sandstone
Spinel
Spinel
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