Rare Fred Harvey Era Turquoise Ring Navajo Sterling Silver Size 5 3/4

Fred Harvey Era Navajo ring C. 1930. I have never seen this design before. Set with a pear shaped natural turquoise stone and four tine snake eyes in bright blue turquoise. 

Size: 5 3/4 Face of the ring measures 3/4" long. Weight: 6.4 grams. Silver has a nice gunmetal patina from age. Super nice!