Zuni Channel Inlay Ring in Sterling Silver Size 10 1/2

Vintage Zuni sterling silver ring that is channel inlay set. Stones include Sugilite, azurite/malachite,Mother of pearl, coral and jet. 

Size 10 1/2 and the face of the ring measure 1 3/4" long. Hallmarked on the back, but I cannot read it. Weight: 6.4 grams.