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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Amphibole-rock
Attaway Ametrine
Beryl
Beryl (var. heliodor)
Bismuth
Bununu
Corundum (var. sapphire)
Dyber Ametrine
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Galena with pyrite and marcasite
Garnetiferous schist
Granite block
Limestone with chert
Muscovite schist
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal bone
Paravauxite
Pegmatite
Phosphophyllite
Pyritic slate
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Quinn Canyon
Roebling Opal
Sandstone
Southwest Sunset
Vivianite with pyrite
Zagami
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