81 - 4.0 Carat Round Brilliant Cut Diamond and Platinum Engagement Ring. Diamond measures 11mm x 10.78mm x 5.57mm, L Color, SI3 Clarity. Signed Platinum. Very Good Condition. Ring Size 7. Approx. weight: 3.65 Pennyweights. Shipping $26.00 9estimate $10,000-$15,000)