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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Arkose
Augen gneiss block
Basalt drill core
Basalt drill core
Basalt drill core
Basaltic cinder
Beryl
Beryl (var. heliodor)
Bununu
Corundum (var. sapphire)
Eclogite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Grossular (var. tsavorite)
Grossular (var. tsavorite) and Elbaite
Hemimorphite
Johnstown
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Monazite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Olivine-basalt drill core
Peridot gemstones
Peridotite xenoliths in basalt
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Silver
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