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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Bismarck Sapphire Necklace
Burmese Ruby Bracelet
Carmen LĂșcia Ruby
Cat's Eyes
Corundum (var. ruby)
Corundum (var. sapphire)
Danburite
Elbaites
Granite
Havey Tourmaline
Jadeite
Jadeitite
Limestone with chert
Moonstone
Nakhla
Opal
Opal bone
Peridot gemstones
Petalite
Poudretteite
Quartz (var. amethyst)
Quinn Canyon
Roebling Opal
Sandstone
Scapolite
Spinel Bracelet
Spinels
Star of Asia
Staurolite schist
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