Sapphire and diamond ballerina ring. Set slightly raised to centre with an elongated oval brilliant cut diamond in an open back four claw setting with a weight of 1.17 carats, encircled by a row of fifteen tapered channel set baguette cut diamonds in open back rubover settings with a combined weight of 1.27 carats, and a row of fifteen tapered baguette cut channel set 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, the two encircling rows flow in an undulating concentric fashion to an outward spray with a linear openwork gallery and supportive curved shoulders and intricate backholing, leading down to a solid tapered flat 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.
