Vintage Mid-Century Navajo sterling silver ring. It is a simple design with a plain bezel framed with twisted wire rope.  It is hallmarked on the back Raymond G. 

The stone is an outstanding natural nodule turquoise with huge inclusions of pyrite. See the side view photos. It has so much pyrite that it sparkles in the sun. 

The shank is hand hammered and cold chisel split. Shank has some wonky bends, but it seems to have been made that way. 

SIze 7.25 Face is 7/8” long. Weight: 7.4 grams. Silver has some tarnish.