Bidspirit auction | 18K Gold and 1.6 Ct

18K Gold and 1.6 Ct Blue Diamond Ring - A size 5 ring with a central round brilliant cut greenish blue treated diamond flanked by marquise and round cut accent diamonds. The central diamond is approximately 1.6 carats (by formula, 7.66mm x 7.65mm x 4.53mm), Clarity I1. The ring weighs 6.1 grams and is marked 18k with maker's mark and stamped 1983.