Diamond, Opal, White Gold Bracelet The bracelet features oval-shaped opal cabochons ranging in size from 3.30 x 2.50 mm to 8.20 x 6.00 mm, accented by European-cut diamonds weighing a total of approximately 0.55 carat, set in 18k white gold. Gross weight 12.20 grams. Dimensions: 6-1/2 inches x 3/8 inch