Sapphire and diamond ring, circa 1910
Set with an oval sapphire, the graduated shoulders set with calibré-cut sapphires, framed by single-cut diamonds, size 52, French import assay mark for platinum, gross weight 5.30 grams.
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重要拍賣通知
Accompanied by SSEF report no. 105988, dated 25 March 2019, stating that the sapphire is of Basaltic deposit, with no indications of heating.