IGI Certified 18k Gold S-Link Diamond Tennis Bracelet (5.0 cttw, H-I Color, SI2-I1 Clarity), 7" Tennis bracelet featuring 18k gold S-link chains and glistening round-cut diamonds in prong settings IGI-certified jewelry has been assessed and authenticated by the International Gemological Institute's expert gemologists. All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free. Domestic