Gold Earrings Blue topaz & Diamonds - White Gold 18 K. Blue topaz Couchion Cut shape 8 x 8 mm, weight 4.6 Ct / pair, color Swiss Blue. Diamond weight 0.06 Ct/ pair, diameter 2 mm, color H, clarity S1. White gold 18 K, weight 5.35 g. Can be complete with NEA pendant.