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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Almandine schist
Beryl (var. emerald)
Cafarsite
Calcite
Elbaite
Fluorite with quartz
Fluorites
Kyanite schist
Magnetite
Marble with wollastonite
Milarite with chlorite
Millerite
Millerite with hematite and quartz
Orthoclase (var. adularia)
Peekskill
Quartz (var. smoky quartz)
Quartz Gems
Siderite
Spessartine
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