Very Rustic Navajo Sterling Silver Ring with Natural Turquoise Size 5

This is a very primitive and rustic hand made Navajo ring. It has a hand hammered shank that is lumpy and cold chisel spilt. The natural square turquoise stone is set in a sawtooth bezel. It has a simple setting around the bezel. There is very old crusty silver polish around the bezel that is so old that it has verdigris from the oxidation of the copper in the solder. I decided to leave the patina totally natural and not clean it. Marked sterling on the back. Size 5. 11mm square. Weight: 5.2 grams.