Sapphire and diamond ring by Oscar Heyman Bros. Channel set to centre with twenty four rectangular baguette cut natural sapphires in open back rubover channel settings with an approximate combined weight of 2.01 carats, further set with twenty two round brilliant cut diamonds in open back grain settings with an approximate total weight of 0.48 carats, to an attractive cluster with signature Oscar Heyman Brothers dot and dash engraving to the gallery and intricate pierced backholing, the integrated shoulders flowing smoothly through to a solid D-shape shank. Marked 18 carat yellow gold and platinum, maker's mark for Oscar Heyman Brothers, numbered '38189', American, circa 1970.
