This original vintage cocktail ring is custom made using a fantastic large, Persian turquoise stone. This oval turquoise stone is a dark, peacock blue color. This turquoise cabochon is set in a heavy gold, tree inspired setting. Shank is wide. Metal Content is 14KT yellow gold, tested but not marked. Persian Turquoise Cabochon: W13.61 x H19.38. Color: Turquoise blue with green tint from maturing. Shape: Oval Cabochon.