Kay Jewelers Black Diamond Necklace 1/6 ct tw Round-cut Sterling Silver- More: White diamonds decorate the head of a captivating dragonfly in this eye-catching necklace for her. Artistry Black Diamonds™ flow along the body, while distinctive black and white enamel adds style to the wings. Styled in sterling silver, the pendant is suspended from an 18-inch rope chain fastened with a lobster clasp. This fine jewelry necklace has a total diamond weight of 1/6 carat. Black diamonds are treated to permanently create the intense black color.