1.35ct old mine cut oval cushion diamond 6.4mm x 6mm set in a hand made unique geometric design with 0.18ct of baguette diamond shoulders and 0.20cts of old brilliant cut diamonds. Head size 12mm x 18.5mm. All set in platinum. French circa 1920. Currently finger size K. Easy to size at no extra charge. Unique and stylish design, clean and in excellent condition.