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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Amphibole-rock
Arkose
Augen gneiss block
Baryte
Basaltic cinder
Beryl
Beryl (var. heliodor)
Bununu
Calcite
Corundum (var. sapphire)
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Fluorite
Fluorite
Fluorite with calcite and chalcopyrite
Fluorites
Freedom Diamond
Garnetiferous schist
Granite block
Hemimorphite
Johnstown
Lafayette
Lafayette
Manganoan calcite
Marcasite
Microcline (var. amazonite)
Migmatite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Paragould
Pearl and Peridot Haircomb
Pegmatite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Pagination
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