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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Opal in matrix
Opals
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Paravauxite
Peridot
Peridot
Peridot
Peridot gemstones
Phosphophyllite
Picasso Kunzite Necklace
Pollucite
Purple agate
Pyrite
Pyrite with calcite
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Scorodite
Sinuous Gypsum
Southwest Sunset
Sphalerite
Spindle Bomb
Titanite with calcite and adularia
Tlacotepec
Topaz
Triplite
Unusual Gems
Väyrynenite
Vivianite with pyrite
Wulfenite
Wulfenite
Pagination
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