Diamond, Opal, Gold Rings The lot includes: one ring featuring marquise and full-cut diamonds weighing a total of approximately 2.50 carats, set in 14k gold (Size: 6-1/2, not sizeable), one ring featuring an oval-shaped opal measuring 9.91 x 7.93 x 1.75 mm, accented by full-cut diamonds weighing a total of approximately 0.80 carat, set in 14k gold (Size: 6, sizeable). Gross weight 16.40 grams.