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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
Cape York
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Dyber Ametrine
Folded anorthosite
Hemimorphite
Hubnerite with quartz
Johnstown
Kyanite schist
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Missouri River Sapphires
Montana Sapphires
Opal
Paravauxite
Phosphophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. ametrine)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Rhodochrosite with quartz
Rhodonite
Rock Creek Sapphires
Southwest Sunset
Tetrahedrite
Tugtupite
Pagination
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