Kay Jewelers Black Diamond Ring 1/3 ct tw Round-Cut 10K White Gold- Fashion Rings: "X" marks the spot in this ring for her. White diamonds and Artistry Black Diamonds™ team up and deliver distinctive sparkle. Set in 10K white gold, this fine jewelry ring contains a total diamond weight of 1/3 carat. Black diamonds are treated to permanently create the intense black color. Available online while supplies last.