The Turquoise Mountain Mine is located near the Kingman mine in Northwestern Arizona and has been closed since the 1980's. The stone varies from light to high blue or blue-green with gold or brown matrix. This beautiful stone is highlighted with rare spider web matrix. Burt has done a very detailed job with the sterling silver bezel of heavy twisted rope and a single silver drop at the bottom. Hallmarked "BKF" and ".925" on the back. Crafted entirely of sterling silver. THE 18" STERLING SILVER CHAIN IS INCLUDED! Pendant and bezel measures 1" (NOT including the bail) by 5/8" at the widest point. The 3/8" bail has a 6mm opening.