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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Attaway Ametrine
Augen gneiss block
Basaltic cinder
Bismuth
Dyber Ametrine
Eclogite
Freedom Diamond
Hemimorphite
Johnstown
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Millerite
Monazite
Paravauxite
Peridot gemstones
Phosphophyllite
Quartz (var. agate)
Quartz (var. ametrine)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Southwest Sunset
Vivianite with pyrite
Zircon (var. cyrtolite)
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