A YELLOW SAPPHIRE AND DIAMOND RING Of pear-shaped design, set with a pear-shaped yellow sapphire weighing approximately 4.70 carats, within a surround of tapered baguette- and brilliant-cut diamonds, mounted in gold, ring size O Accompanied by a report from Istituto Gemmologico Nazionale in Italy, stating that the yellow sapphire is natural, heat treated. Report dated Rome 10 April 2019.