Belk & Co. 1/4 Ct. T.W. Diamond Tilted Open Heart Necklace In 10K White Gold. This beautiful Belk & Co. 1/4 ct. t.w. Diamond open heart necklace is crafted in shining 10k White Gold and features 68 round-cut, pave-set twinkling diamonds forming 2 rows of an open heart motif. Enhanced with a high polish finish, this diamond heart pendant is suspended on a 17-inch chain and secures with a spring-ring clasp.