Needlepoint Turquoise Long Ring in Sterling Silver Zuni Size 7

Vintage Zuni long ring set with needlepoint turquoise. The stones were all blue at one time, but now in vintage condition they have changed color with exposure to air and skin oils. Some are very dark green. Ring is 2 1/8" long. Size 7. Shank is fine and made from hand pulled wire. Weight: 4.6 grams.