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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Baryte
Basaltic cinder
Beryl
Beryl (var. heliodor)
Bununu
Calcite
Corundum (var. sapphire)
Demantoid with serpentine
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Fluorite
Fluorite with calcite and chalcopyrite
Fluorites
Freedom Diamond
Gypsum with sulphur
Hemimorphite
Johnstown
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Muscovite schist
Nautilus Tourmaline Pendant
Nigerian tourmalines
Phosgenite
Pyritic slate
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Sulfur
Unusual Gems
Vigarano
Zagami
Pagination
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