Oscar Heyman Brothers sapphire and diamond ballerina ring. Set to centre with an oval brilliant cut diamond in an open back claw setting with an approximate weight of 1.17 carats, encircled by a row of fifteen tapered baguette cut diamonds in open back rubover settings with a combined weight of 1.27 carats, further adorned with a row of fifteen tapered baguette cut natural unenhanced sapphires in open back rubover settings with a combined approximate weight of 1.56 carats. The total approximate diamond weight is 2.44 carats, to an undulating cluster design featuring polished borders, a pierced linear gallery and open shaped backholing, leading down to slightly raised shoulders and tapering to a solid D-shape shank. Marked 18 carat yellow gold, maker's mark for Oscar Heyman Brothers, numbered '30110' American, circa 1976, accompanied by Oscar Heyman Brothers authenticity certificate.
