This is a beautiful example of the high quality inlay done by the Zuni. The ring is sterling and quite chunky. To design and execute inlay is an art. This ring has a design done in turquoise, coral, mother of pearl and onyx. I am not sure what the deep brown stone is called. Ring is size 8 3/4 and is marked R & GT. The center of the front is just under 7/8" front to back and ring weighs about 12 grams. It is in excellent condition.