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