Carlin Mine Turquoise Navajo Ring in Sterling Silver Size 7

Vintage Navajo sterling silver raindrop ring set with a natural Carlin Mine turquoise stone. (The Carlin Mine was closed many years ago) Shank is cold chisel split with raindrops. Face measures 1 1/4" long. Size: 7

Weight: 6.6 grams. Some tarnish.