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Smithsonian National Museum of Natural History
GeoGallery
Breadcrumb
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GeoGallery
Attaway Ametrine
Bismuth
Dyber Ametrine
Imilac
Imilac
Limestone with chert
Millerite
Nakhla
North Chile
Opal
Opal bone
Paravauxite
Peridot gemstones
Phosphophyllite
Proustite cross (NMNH 12829-00)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Quinn Canyon
Roebling Opal
Sandstone
Southwest Sunset
Vivianite with pyrite
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