Sterling Silver and Turquoise are a magnificent combination in jewelry. The Native Americans were creative in producing infinite varieties of jewelry using these materials. This ring is very unusual with the sterling extension on one side of the turquoise. It is very impressive, not only in design, but in size. The center front is 1 1/8" from beginning to end. Ring is size 7 3/4 and is unmarked. If you look at the photos you can see that it was lovingly worn and is slightly out of round on the back of the band. This does not affect the wearability or beauty of this vintage ring. It weighs about 12 grams and is in excellent condition.