Platinum ring set with 7.5 ct Cornflower natural untreated sapphire (Sri Lanka Ceylon) and diamond, included ALGT certificate. Set with a oval faceted natural sapphire of 7.50 ct. (approx. 11.60 x 9.40 mm) and 10 single-cut diamonds totalling 0.13 ct. (VS - P / F - G). In good condition, one of the diamonds has a chip. Hallmarks: Dutch assay mark 900, unreadable maker's mark. Included: IGI certificate. Ring size: 16 mm / 50 mm. Weight: 5.70 grams. Sapphire data: Colour intense blue, Transparency: Transparent, Origin: Sri Lanka Ceylon, Untreated.