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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Agate
Azurite
Calcite
Chiastolite
Diopside
Elbaite
Elbaite candelabra
Elbaite steamboat
Ellestadite
Foshagite
Gold
Gold
Gold
Gold leaf
Gold nugget
Gold on quartz
Gypsum
Gypsum
Gypsum
Hemimorphite
Lawsonite
Merwinite
Mimetite
Opal in matrix
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Purple agate
Pyrite with calcite
Pyrophyllite
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Scorodite
Sinuous Gypsum
Spurrite
Wulfenite
Pagination
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