Cathy Waterman's geometric, 22k gold cage ring features a central diamond and platinum band. Round white diamonds Platinum, 22k gold Platinum band consists of alternating kite-shaped and circular links, circular links feature bezel-set white diamonds, fine milgrain work throughout 6mm band width, approximately For information about additional ring sizes, please contact our customer service representatives via email at webservices@barneys.com or by phone at 888.222.7639.