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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Attaway Ametrine
Beryl
Beryl (var. heliodor)
Bismuth
Bununu
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Corundum (var. sapphire)
Dyber Ametrine
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Kyanite schist
Limestone with chert
Missouri River Sapphires
Montana Sapphires
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal bone
Paravauxite
Phosphophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Quinn Canyon
Rock Creek Sapphires
Roebling Opal
Rose City
Sandstone
Southwest Sunset
Veszelyite
Vivianite with pyrite
Pagination
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