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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Beryl
Beryl (var. emerald)
Beryl (var. heliodor)
Beryl (var. heliodor)
Bununu
Clinohumite
Corundum (var. ruby)
Corundum (var. sapphire)
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Estherville meteorite
Ethiopian Opals
Freedom Diamond
Georgina Emerald
Hemimorphite
Homestead
Johnstown
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal
Opal
Opal
Opal
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Spinel
Pagination
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