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Smithsonian National Museum of Natural History
GeoGallery
Breadcrumb
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GeoGallery
Alexandrites
Andradite (var. demantoid)
Andradite (var. demantoid)
Attaway Ametrine
Black Opal Ring
Chrome Diopside
Dark Jubilee Opal
Dyber Ametrine
Opal
Opal
Opal
Opal Peacock Brooch
Phosphophyllite
Quartz (var. ametrine)
Quartz Gems
Southwest Sunset
Tiffany Amethyst Necklace
Tiffany Opal Necklace
Topaz Gems
Unusual Gems
Yowah Opal Nut
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