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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Alexandrites
Amphibole-rock
Andradite (var. demantoid)
Andradite (var. demantoid)
Banded iron formation
Basalt bomb
Chrome Diopside
Galena with chalcopyrite, sphalerite, and others
Garnetiferous schist
Granite block
Olivine-gabbro
Opal
Opal
Opal replacing wood
Pegmatite
Perovskite
Platinum nugget
Pyromorphite
Pyrrhotite
Quartz (var. agate)
Russian beryls
Russian chrysoberyls
Sikhote-Alin
Sperrylite
Tiffany Amethyst Necklace
Topaz Gems
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