Unusual Vintage Sterling Silver Onyx and Turquoise Zuni Inlay Ring Size 5.25 / 5.5 . This beautiful little ring is set with four turquoise gemstone dots in a black onyx gemstone. The onyx has interesting flecks of orange red in two spots. The ring is estimated to be from the 1950's, no hallmark, tests as solid sterling. Condition is very good, light wear on silver surface. One of a kind.