Turquoise is a sky-blue or green translucent to opaque basic aluminum phosphate that contains copper. It has been prized as a gemstone for millennia. Turquoise is popular in tribal and ethnic jewelry, especially in Native American and Tibetan styles using silver. However, it looks equally stunning when set in yellow precious metal, such as in Egyptian-inspired jewelry. Large turquoise gemstones make bold designs whilst turquoise chips and small beads lend themselves well to more delicate designs. The cool color of turquoise makes it a perfect summer gemstone and turquoise jewelry can be made to suit any preference, from simple wire-wrapping or beaded pieces to intricate antique designs. Best quality turquoise is located in Northeast Iran. Turquoise deposits are also found in Afghanistan, Argentina, Australia, Brazil, China, Israel, Mexico, Tanzania and the USA.