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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
Fort Stockton
Freedom Diamond
Hemimorphite
Johnstown
Maharaja of Indore Necklace
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Plainview
Plantersville
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Smithsonite
Smithsonites
Topaz Gems
Topaz Pendant
Zircon (var. cyrtolite)
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