Vintage sterling silver ring by Navajo artist Richard Begay. It is set with a very fine mint green turquoise stone. The bezel and the ripple edge is gold. The back is marked sterling and 1C-which may be a partial metal purity mark for the gold. It may be solid or plated. I do not want to file into it to find out. Also marked RB. 

Size 7. Shank is stamp decorated. The setting sits on a pedestal. (See side view photo). Face is 1” long. Weight: 7.5 grams. It has some tarnish. It will polish up.