1940'S PLATINUM, DIAMOND AND AQUAMARINE RETRO DESIGN RING,circa 1940's, Emerald-cut aquamarine weighing approximately 40 ct. held by four corner prongs; shoulders of shank each set with arched channel of five graduated square and trapezoidal aquamarine and smaller arched channel of five brilliant cut round diamonds; Total weight of ten diamonds approximately 40 ct. shank stamped "Irid. Plat" and bearing no. 38547. Ring size: 9. Gross wt. 17 dwt. Estimate $3,000-5,000