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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Attaway Ametrine
Azurite
Baryte with berthierite
Bismuth
Cronstedtite
Dyber Ametrine
Ensisheim
Juvinas
Mezö-Madaras
Orgueil meteorite
Paravauxite
Phosphophyllite
Pyromorphite
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Quartz on siderite
Southwest Sunset
Staurolite
Sylvanite
Vivianite with pyrite
Wulfenite
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