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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Amphibole-rock
Attaway Ametrine
Banded iron formation
Beryl
Beryl (var. heliodor)
Bismuth
Bununu
Corundum (var. sapphire)
Dyber Ametrine
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Garnetiferous schist
Granite block
Marie Louise Diadem
Nautilus Tourmaline Pendant
Nigerian tourmalines
Olivine-gabbro
Opal
Opal
Opal replacing wood
Paravauxite
Pegmatite
Phosphophyllite
Pyromorphite
Quartz (var. agate)
Quartz (var. ametrine)
Quartz Gems
Southwest Sunset
Vivianite with pyrite
Zagami
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