Oscar Heyman Brothers sapphire ring. Set with sixteen rectangular calibre cut natural sapphires in open backrubover and channel settings with an approximate combined weight of 2.64 carats, to an impressive bi-colour twist design featuring polished edges and open backholing. Marked 18 carat yellow gold and platinum, maker's mark for Oscar Heyman Brothers, numbered 'M2843', American, circa 1970.
Oscar Heyman Brothers sapphire ring, American, circa 1970.
Oscar Heyman Brothers sapphire ring. Set with sixteen rectangular calibre cut natural sapphires in open back rubover and channel settings with an approximate combined weight of 2.64 carats, to an impressive bi-colour twist design featuring polished edges and open backholing. Marked 18 carat yellow gold and platinum, maker's mark for Oscar Heyman Brothers, numbered 'M2843', American, circa 1970.