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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Hologem Fire Opal Pendant
Kermesite with senarmontite and dolomite
Magombedze
Mimetite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Nuevo Mercurio
Opal (var. hyalite)
Opal in matrix
Opals
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Peridot
Peridot
Peridot
Peridot gemstones
Perovskite
Platinum nugget
Purple agate
Pyrite with calcite
Pyrrhotite
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Russian beryls
Russian chrysoberyls
Scorodite
Sikhote-Alin
Sinuous Gypsum
Sperrylite
Spindle Bomb
Tiffany Amethyst Necklace
Titanite
Titanite with calcite and adularia
Tlacotepec
Topaz
Pagination
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