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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Attaway Ametrine
Augen gneiss block
Aurichalcite with hemimorphite
Baryte
Basaltic cinder
Beryl
Bismuth
Calcite
Dyber Ametrine
Fluorite
Fluorite
Fluorites
Hematite
Hemimorphite
Johnstown
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Paravauxite
Phosphophyllite
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Sandstone
Southwest Sunset
Vivianite with pyrite
Zircon (var. cyrtolite)
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