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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Nautilus Tourmaline Pendant
Nigerian tourmalines
Paravauxite
Peridot gemstones
Petalite
Phosphophyllite
Poudretteite
Pyromorphite
Quartz (var. ametrine)
Quartz Gems
Scapolite
Scheelite
Southwest Sunset
Spinel Bracelet
Spinels
Star of Asia
Vivianite with pyrite
Zagami
Pagination
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