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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal
Opal
Opal
Opal
Orbicular agate
Orthoclase
Pyrope (var. rhodolite)
Quartz
Quartz (var. amethyst)
Quartz with Fluorite
Scapolite
Scapolite
Spessartine
Spinel
Spinel
Spinel ring
Sunstone
Tetrahedrite
Titanite
Titanite
Topaz Gems
Unusual Gems
Unusual Gems
Zagami
Zircon
Zircon
Zircon
Zoisite
Zoisite ( var. tanzanite)
Zoisite (var. tanzanite)
Zoisite (var. tanzanite)
Zoisites
Pagination
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