Sterling Silver Created White Sapphire and Black Accent Diamond Ring (0.33 Cttw) Center stone is a 1 3/8-carat created white sapphire. Two black diamond accent stones with 1/3-carat total weight add sparkle and luster. Set in silver with black rhodium plating. Fall in love with this intricately designed sapphire and diamond fashion ring. 30-day money-back guarantee on every purchase.