Black Jade Diamond Cocktail Ring w/ 18k Yellow GoldThis extraordinary Mid Century cocktail ring will have you falling in love with black jade! One of the rarest stone colors of the jade family, this highly sought after black jade ring features a 1. 30 carat bezel set diamond in 18 karat yellow gold. The sparkling, near colorless diamond takes centerstage against the bubbly jade band. With contrasting colors and golden accents, this vintage ring is a one of a kind treasure from the Mid Century era!