The Gemstone Encyclopedia
Discover the world's most beautiful gemstones. Properties, origins, comparisons, and expert guides — all in one place.
Today's Gemstone
Paraíba Tourmaline (Cuprian Elbaite)
Semi-Precious Gems
Paraíba tourmaline glows neon blue-green from copper coloration, first found in Brazil's Paraíba state in the 1980s. The most valuable tourmaline; copper-bearing material also found in Mozambique and Nigeria.
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