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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Carlton iron meteorite
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Elbaites
Fort Stockton
Granite
Havey Tourmaline
Hemimorphite
Johnstown
Kyanite schist
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Missouri River Sapphires
Montana Sapphires
Plainview
Plantersville
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Rock Creek Sapphires
Staurolite schist
Topaz Gems
Topaz Pendant
Veszelyite
Zircon (var. cyrtolite)
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