Kingman is the marketing name for turquoise mined from two mountains near Mineral Park Arizona, Ithaca Peak and Turquoise (Aztec) Mountain. Turquoise from Ithaca Peak has been sold by that name where that from Turquoise Mountain has been sold as Turquoise Mountain but for many recent years as Kingman. The history of Kingman is told in Turquoise in America Parts One and Two.
 
This cab weighs 16 carat and measures 2.75cm X 1.5cm and is priced at $100 a carat or $1600. It is not treated and is backed. I have assigned a TG of 91 or GG. The stone is from the Callais Collection. White spot is camera flash.