A SAPPHIRE AND DIAMOND CLUSTER RINGThe oval-shaped sapphire weighing 4.01cts within a four-claw setting and round brilliant-cut diamond frame, mounted in 18K gold, diamonds approximately 0.80ct total, UK assay marks, ring size L?Accompanied by a report from The Gem & Pearl Laboratory in London, stating that the sapphire weighing 4.01cts is of Sri Lankan origin, with no evidence of heat treatment. Report no. 17006, dated March 26th 2019.