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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Arkose
Augen gneiss block
Baryte with berthierite
Basaltic cinder
Beryl
Beryl (var. emerald)
Beryl (var. heliodor)
Bununu
Calcite
Corundum (var. sapphire)
Cronstedtite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Ethiopian Opals
Fluorites
Freedom Diamond
Georgina Emerald
Grossular (var. tsavorite)
Grossular (var. tsavorite) and Elbaite
Hemimorphite
Johnstown
Manganoan calcite
Marble with wollastonite
Mezö-Madaras
Microcline (var. amazonite)
Migmatite
Millerite
Millerite with hematite and quartz
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Pagination
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