, the ring set with a Ceylonese rectangular cushion-cut sapphire, approx 9.4 x 7.5 x 7.1 mm? 4.67 ct, in a platinum mount with tapered baguette diamonds to shoulders, size N, approx 5 gms, complete with Gem and Pearl certificate 18216 dated 20th December 2019 stating no evidence of heat treatment observed.