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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Afghanite with calcite
Attaway Ametrine
Bastnäsite with quartz
Beryl
Beryl (var. heliodor)
Bismuth
Bununu
Corundum (var. ruby)
Corundum (var. sapphire)
Dyber Ametrine
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Elbaites
Fluorite
Kyanite with biotite
Limestone with chert
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal bone
Paravauxite
Phosphophyllite
Picasso Kunzite Necklace
Pollucite
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Quinn Canyon
Roebling Opal
Sandstone
Southwest Sunset
Vivianite with pyrite
Weston
Zagami
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