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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Orbicular agate
Orthoclase
Paravauxite
Pearson Diamond
Phosphophyllite
Portuguese Diamond
Quartz
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Quartz with Fluorite
Rhodochrosite
Ruby and Diamond Brooch
Shepard Diamond
Southwest Sunset
Spessartine
Spessartine
Sugilite
Titanite
Titanite
Topaz Gems
Unusual Gems
Unusual Gems
Unusual Gems
Victoria-Transvaal Diamond
Vivianite with pyrite
Zircon
Pagination
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