Platinum, emerald and diamond ring, Oscar Heyman & Brothers, of cluster design, centring a square emerald-cut emerald weighing approximately 0.62 carat, framed by a line of marquise-shaped diamonds further bordered by a surround of baguette and brilliant-cut diamonds, the diamonds together weighing approximately 3.04 carats, size N, maker's mark for Oscar Heyman & Brothers, indistinctly numbered 15356.