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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Actinolite
Arkose
Augen gneiss block
Basaltic cinder
Bismarck Sapphire Necklace
Burmese Ruby Bracelet
Carmen LĂșcia Ruby
Cat's Eyes
Columnar dacite
Corundum (var. ruby)
Corundum (var. sapphire)
Danburite
Demantoid with serpentine
Gypsum with sulphur
Hemimorphite
Jadeite
Jadeitite
Johnstown
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Moonstone
Peridot gemstones
Petalite
Phosgenite
Poudretteite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Scapolite
Spinel Bracelet
Spinels
Star of Asia
Sulfur
Unusual Gems
Pagination
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