Turquoise Beads

Turquoise is a hydrous phosphate of copper and aluminum; a secondary mineral occurring in the potassic alteration zone of hydrothermal porphyry copper deposits, usually in arid regions, on aluminous igneous or sedimentary rocks (as vein filling in volcanic rocks and phosphatic sediments). The name comes from French "turques" or "turquois" meaning "Turkish" the original material found on the south slopes of the Al-Mirsah-Kuh Mountains (Iran), but which found its way to Europe via Turkey.