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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Alexandrites
Andradite (var. demantoid)
Andradite (var. demantoid)
Andradite (var. demantoid)
Andradite (var. demantoid)
Banded iron formation
Basalt bomb
Calcite with duftite
Chrome Diopside
Demantoid Bracelet
Descloizite in dolomite
Fluorites
Galena with chalcopyrite, sphalerite, and others
Hoba
Hoba
Jeremejevite
Limestone with chert
Ludlockite with smithsonite
Malachite with azurite
Malachite with cuprite, quartz, and azurite
Olivine-gabbro
Opal
Opal bone
Perovskite
Phosgenite
Platinum nugget
Pyrrhotite
Quartz (var. agate)
Quartz (var. amethyst)
Quinn Canyon
Roebling Opal
Russian beryls
Russian chrysoberyls
Sandstone
Sikhote-Alin
Pagination
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