Vintage Navajo Long Rectangular Turquoise Ring in Sterling Silver 7.25

Olv vintage Navajo sterling silver ring that is set with a long rectangular natural turquoise stone. The turquoise has deep color and milk chocolate brown matrix. Size 7.25 and it measures 1 1/16" long. Weight: 7.7 grams. No hallmarks. Acid tested. C. 1960. Stone has a natural hairline that does not compromise the integrity of the stone.