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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Elbaites
Ensisheim
Freedom Diamond
Granite
Havey Tourmaline
Hemimorphite
Johnstown
Juvinas
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Orgueil meteorite
Pyromorphite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Quartz on siderite
Rhodochrosite
Staurolite
Staurolite schist
Zircon (var. cyrtolite)
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