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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Actinolite
Arkose
Augen gneiss block
Basaltic cinder
Beryl
Beryl (var. heliodor)
Bununu
Columnar dacite
Corundum (var. sapphire)
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Fluorites
Freedom Diamond
Harriman
Hemimorphite
Johnstown
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Zagami
Zircon (var. cyrtolite)
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