Two 18K gold, pearl and diamond rings, 1. 18K gold, South Sea pearl, and diamond ring, the pearl measuring approximately 13.00 mm, with golden overtones, with single-cut diamonds, weight 17.0gm, ring size K 1/2, 2. 18K gold, mabe pearl and diamond ring, Centering a cream-colored mabe pearl measuring approximately 16.40 x 16.50 mm, framed by round diamonds weighing approximately 0.25 carat, weight 13.9gm, ring size M 1/2.