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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Bismarck Sapphire Necklace
Burmese Ruby Bracelet
Carmen LĂșcia Ruby
Cat's Eyes
Conchita Montana Sapphire Butterfly
Corundum (var. ruby)
Corundum (var. sapphire)
Corundum (var. sapphire)
Danburite
Freedom Diamond
Hemimorphite
Jadeite
Jadeitite
Johnstown
Kyanite schist
Kyanite with biotite
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Missouri River Sapphires
Montana Sapphires
Moonstone
Peridot gemstones
Petalite
Poudretteite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Rock Creek Sapphires
Scapolite
Spinel Bracelet
Pagination
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