Emerald, Diamond, 18k Gold Ring The ring features a marquise-shaped emerald measuring 7.00 x 3.70 x 2.50 mm and weighing approximately 0.25 carat, enhanced by full-cut diamonds weighing a total of approximately 0.70 carat, set in 18k gold with rhodium accents. Gross weight 5.00 grams. Size: 5-3/4 (sizeable)