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Smithsonian National Museum of Natural History
GeoGallery
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Basalt drill core
Basalt drill core
Basalt drill core
Beryl
Beryl (var. heliodor)
Bununu
Cafarsite
Corundum (var. sapphire)
Demantoid with serpentine
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Fluorite with quartz
Fluorites
Gypsum with sulphur
Kyanite schist
Limestone with chert
Magnetite
Milarite with chlorite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Olivine-basalt drill core
Opal
Opal bone
Orthoclase (var. adularia)
Peridotite xenoliths in basalt
Phosgenite
Quartz (var. amethyst)
Quartz (var. smoky quartz)
Quartz Gems
Quinn Canyon
Roebling Opal
Sandstone
Siderite
Sulfur
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