Vintage Navajo Bypass Ring with a Single Turquoise Snake Eye Adjustable

Vintage 1970s Navajo bypass ring in sterling silver, It has an applied feather, raindrops and it is set with a single snake eye turquoise stone. It is adjustable. Right now it is a size 6 1/2. 20mm wide. Very tarnished. Marked sterling inside in the earlier block letter style stamp. Weight: 2.3 grams.