GEM ENCYCLOPEDIA
FEATURED GEM
Peridot
Found in lava, meteorites, and deep in the earth's mantle, yellow-green peridot is the extreme gem
THE FACTS
Yellow-green gem variety of the mineral olivine. Found as nodules in volcanic rock, occasionally as crystals lining veins in mountains of Myanmar and Pakistan, and occasionally inside meteorites.
GIA’s Guide to Gemstones: Gem Encyclopedia
GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.
