Book excerpt: Turquoise has been mined on six continents and traded by cultures throughout the world's history, including the Europeans, Chinese, Mayan, Aztec, Inca, and Southwest Native Americans. It has been set in silver and gold jewelry, cut and shaped into fetish animals, and even formed to represent gods in many religions. This gemstone is displayed in museums around the world, representing the arts and traditions of prehistoric, historic, and modern societies. Turquoise focuses on the latest information in science and art from the greatest turquoise collections around the globe.