The Kingman Turquoise mine in Arizona has been producing beautiful turquoise as far back as 1000 AD when the Mayans utilized this beautiful stone for adornments and ceremonial items. Throughout its history, the Kingman mine has been one of the largest and most productive mines for the American turquoise industry. The Kingman mine produces a wide variety of blues and greens as well as matrix patterns. Our Kingman is backed and stabilized unless otherwise noted. The coin in the photograph is not included in purchase, it is only meant to be a size reference.