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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Paravauxite
Pearson Diamond
Phosphophyllite
Portuguese Diamond
Pyromorphite
Quartz (var. ametrine)
Quartz Gems
Rhodochrosite
Ruby and Diamond Brooch
Shepard Diamond
Southwest Sunset
Spinel peridotite
Sugilite
Thompson Diamonds
Tiffany Opal Necklace
Unusual Gems
Unusual Gems
Victoria-Transvaal Diamond
Vivianite with pyrite
Winston Adamantine Pearl
Yowah Opal Nut
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