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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Milarite with chlorite
Nakhla
Nautilus Tourmaline Pendant
Nigerian tourmalines
Oppenheimer Diamond
Orthoclase (var. adularia)
Pearson Diamond
Peridot gemstones
Portuguese Diamond
Quartz (var. smoky quartz)
Quartz Gems
Rhodochrosite
Ruby and Diamond Brooch
Shepard Diamond
Siderite
Sugilite
Unusual Gems
Victoria-Transvaal Diamond
Zagami
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