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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Cafarsite
Carlton iron meteorite
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Fluorite with quartz
Fluorites
Fort Stockton
Freedom Diamond
Hemimorphite
Johnstown
Kyanite schist
Kyanite schist
Magnetite
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Milarite with chlorite
Missouri River Sapphires
Montana Sapphires
Orthoclase (var. adularia)
Plainview
Plantersville
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Rock Creek Sapphires
Siderite
Topaz Gems
Topaz Pendant
Pagination
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