Vintage Cocktail Ring Mid-Century 9.00 Marquis Cut Amethyst in 10k Yellow GoldThis vintage cocktail ring is as striking as it is fun. The marquise shaped amethyst weighs 9. 00 carats and is set in 10k yellow gold. This substantial ring is easy to wear because the large gemstone is set horizontally. The amethyst on this Mid Century ring is prong set with two of the prongs protecting the pointed ends of the stone.