This is a signature design by Navajo smithing couple Happy Piasso and Rudy Willie which they execute in making both pendants and rings. They always use the finest grade of stones in these pieces which feature a border formed by starred buttons.
This is set with a pretty teardrop of natural, untreated Kingman turquoise from Arizona. The stone is set in a 3/16" bezel wrapped with twist wire which, in turn, is encircled by starred buttons which form the edge of the ring face. The shank is of uniform width and is marked by stripes of grooved stampwork.
Hallmarked H. Piasso and stamped Sterling inside the shank.
Stone: 7/8" x 9/16"
Ring face: 1 1/4" x 7/8"
Width of shank: 1/4"