Centering a Marquise Brilliant cut diamond weighing app. 1.74ct. (E color, VVS2 clarity), additionally set with twelve Single cut diamonds (on shoulders and in mounting) weighing app. 0.20ctw., fashioned in platinum. Indecipherable maker's mark. Circa 1928. Worn hand engraving appears to be "1928". Size 5GIA 5151564687