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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Imperial Topaz
Jolie Citrine Necklace
Logan Sapphire
Maharani Cat's Eye
Mimetite
Moonstone
Moonstone Carving
Napoleon Diamond Necklace
Nautilus Tourmaline Pendant
Nigerian tourmalines
Nuevo Mercurio
Opal
Opal (var. hyalite)
Opal in matrix
Opals
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Paraiba Tourmaline
Paraiba Tourmaline
Paraiba Tourmaline
Paraiba Tourmaline Ring
Post Diamond Tiara
Purple agate
Pyrite with calcite
Pyrope
Pyrope (var. rhodolite)
Pyroxmangite
Quartz
Quartz
Quartz (var. agate)
Quartz (var. amethyst geode)
Quartz (var. amethyst geode)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
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