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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Liddicoatite slices
Magnetite
Marquise Diamond Ring
Milarite with chlorite
Nakhla
Nautilus Tourmaline Pendant
Nigerian tourmalines
Oppenheimer Diamond
Orbicular agate
Orthoclase
Orthoclase (var. adularia)
Pearson Diamond
Peridot gemstones
Portuguese Diamond
Quartz
Quartz (var. amethyst)
Quartz (var. smoky quartz)
Quartz Gems
Quartz with Fluorite
Rhodochrosite
Ruby and Diamond Brooch
Shepard Diamond
Siderite
Spessartine
Sugilite
Titanite
Titanite
Topaz Gems
Unusual Gems
Unusual Gems
Unusual Gems
Victoria-Transvaal Diamond
Zagami
Zircon
Pagination
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