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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Alexandrites
Andradite (var. demantoid)
Andradite (var. demantoid)
Aragonite (var. flos ferri)
Attaway Ametrine
Azurite in malachite
Azurite with malachite
Azurite with malachite
Azurite with malachite
Basalt bomb
Basalt lava
Bismuth
Calcite
Calcite
Calcite
Canyon Diablo
Canyon Diablo
Canyon Diablo
Chrome Diopside
Cuprite on copper
Dyber Ametrine
Fire agate
Galena with chalcopyrite, sphalerite, and others
Maharaja of Indore Necklace
Millerite
Paravauxite
Peridot gemstones
Peridot in Basalt
Peridotite xenolith
Peridotite xenolith in basalt
Perovskite
Phosphophyllite
Platinum nugget
Pyrrhotite
Quartz (var. amethyst)
Quartz (var. ametrine)
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