Navajo cluster ring w/turquoise. Set in solid sterling silver with genuine Kingman Arizona turquoise. Unique design with round wire ring shank.The cluster stone area measures 1"1/4 oval and has 13 individually hand cut stones. Signed by the artist. This is a beautiful ring. NAVAJO HANDCRAFTED CLUSTER RING WITH KINGMAN TURQUOISE Kingman Turquoise originates in the Mineral Park Mining District near Kingman, Arizona. One of the largest domestic turquoise mines, it is found in a large open pit copper mine in the high desert country. The Kingman Mine district was first mined by Native Americans; it was part of the most extensive prehistoric workings in Arizona.