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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Nuevo Mercurio
Opal (var. hyalite)
Opal in matrix
Opals
Orthoclase (var. adularia)
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Purple agate
Pyrite with calcite
Pyromorphite
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. smoky quartz)
Quartz Gems
Scheelite
Scorodite
Siderite
Sinuous Gypsum
Spindle Bomb
Tlacotepec
Topaz
Unusual Gems
Wulfenite
Wulfenite
Zagami
Pagination
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