GENTLEMAN'S 18K WHITE GOLD AND WHITE AND COGNAC COLOR DIAMOND RING, Brilliant-cut round cognac color diamond weighing approx. 1.10 ct. surrounded by two round tiers of brilliant-cut white diamonds together weighing approx. 1.30 ct., in bright-polished heavy gold hexagonal setting with faceted sides continuing to shank. Gross wt: 16 dwt. Ring size 10. Estimate $2,500-3,500