Platinum, Diamond and Star Sapphire Ring, Heyman Brothers, prong-set with an oval star sapphire weighing 31.20 cts. framed by oval and round brilliant-cut diamonds weighing 4.31 cts., size 5 3/4, no. 112765, with maker's mark HB and letter from Oscar Heyman & Bros.
Platinum, Diamond and Star Sapphire Ring, Heyman Brothers, prong-set with an oval star sapphire weighing 31.20 cts. framed by oval and round brilliant-cut diamonds weighing 4.31 cts., size 5 3/4, no. 112765, with maker's mark HB and letter from Oscar Heyman & Bros.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
