Adam's Private Fine Jewellery Sale

60 64 AN IMPORTANT SAPPHIRE AND DIAMOND THREE-STONE RING The cushion-shaped sapphire weighing approximately 5.40cts, between two old cushion-shaped diamonds approximately 5.00cts in total, with French assay mark for platinum, ring size N Accompanied by a report from Gem Paris laboratory, stating that the sapphire measuring 10.9x8.6x6.0mm is natural, of Sri Lankan origin with no indications of heat treatment. Report numbered 20181973893, dated June 4th 2018 65 A FINE SAPPHIRE AND DIAMOND RING The antique cushion-shaped sapphire weighing 5.16cts, between shoulders set with stepped baguette-cut diamonds, the gallery pavé-set with brilliant-cut diamonds, diamonds approximately 2.60cts, ring size O Accompanied by a report from the SSEF laboratory stating that the sapphire weighing 5.16cts is natural, of Sri Lankan origin, with no indications of heating. Report number 71159, dated September 23rd 2013 66 AN EMERALD AND DIAMOND CLUSTER RING The oval-shaped emerald weighing approximately 1.50cts, the old European-cut diamond surround weighing approximately 2.20cts in total, mounted in 18K gold and platinum, with French assay marks, ring size O½ 67 A RARE EMERALD AND DIAMOND THREE-STONE RING The octagonal-shaped emerald weighing approximately 3.60cts in total, between two old cushion-shaped diamonds weighing approximately 4.50cts in total, ring size M Accompanied by a report from GCS laboratory in London, stating that the emerald weighing approxi- mately 3.60cts is natural, of Colombian origin with minor clarity enhancement. Report number 5777- 9765, dated April 26th 2017