SIGNED CARTIER PLATINUM AND DIAMOND RING. Emerald-cut diamond weighing approx. 3.15 ct., held by four prongs in A-type mount; shoulders of shank each set with tapering baguette diamond weighing approx. .20 ct.; interior of shank stamped "Cartier 16643." Appraisal prepared by Robert C. Aretz, G.C., AAA., President of Gem Appraisers' Laboratory, Inc., New York, indicates that diamond is of color grade "E-F", clarity grade VVS-1/VVS-2. Estimate $30,000-40,000