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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Calcite
Carlton iron meteorite
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Fluorites
Fort Stockton
Freedom Diamond
Hemimorphite
Johnstown
Kyanite schist
Manganoan calcite
Marble with wollastonite
Microcline (var. amazonite)
Migmatite
Millerite
Millerite with hematite and quartz
Missouri River Sapphires
Montana Sapphires
Peekskill
Plainview
Plantersville
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Rock Creek Sapphires
Topaz Gems
Topaz Pendant
Veszelyite
Zircon (var. cyrtolite)
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