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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Ludlockite with smithsonite
MacAlpine Hills 88105
Mackay Emerald Necklace
Magnetite
Magombedze
Maharaja of Indore Necklace
Maharani Cat's Eye
Malachite
Malachite slab
Malachite with azurite
Malachite with cuprite, quartz, and azurite
Manganoan calcite
Marble with wollastonite
Marcasite
Marie Antoinette Diamond Earrings
Marie Louise Diadem
Marquise Diamond Ring
Maximilian Emerald
Mern
Merwinite
Mesolite
Metaconglomerate
Metatorbernite
Mezö-Madaras
Microcline
Microcline (var. amazonite)
Midnight Dreamscape
Migmatite
Milarite with chlorite
Miller Range 03346
Millerite
Millerite
Millerite with hematite and quartz
Mimetite
Missouri River Sapphires
Mogul Emerald Necklace
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