Black Beauty is a 10 karat Yellow Gold Art Deco Black Onyx Ring. This multi faceted rectangular Black Onyx stone is set atop a bezel frame with picture back like corner prongs. In the middle of the stone sits an angled beaded square with a tiny .01 carat prong set Diamond mounted in White Gold. This Black Onyx stone measures 3/4″ x 5/8″. Hallmarked “10K”. Size 6 3/4″. Circa 1930’s.