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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Almandine schist
Aragonite (var. flos ferri)
Azurite in malachite
Azurite with malachite
Azurite with malachite
Azurite with malachite
Basalt lava
Calcite
Calcite
Calcite
Canyon Diablo
Canyon Diablo
Canyon Diablo
Cuprite on copper
Demantoid with serpentine
Fire agate
Gypsum with sulphur
Opal
Opal
Opal replacing wood
Peridot gemstones
Peridot in Basalt
Peridotite xenolith
Peridotite xenolith in basalt
Phosgenite
Pyromorphite
Quartz (var. amethyst)
Quartz (var. landscape agate)
Smithsonite
Smithsonites
Sulfur
Unusual Gems
Unusual Gems
Vigarano
Wulfenite
Wulfenite
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