Oval sapphire and diamond cluster ring mounted in platinum, the 1.57 carat bi-colour sapphire originating from Madagascar and accompanied by a WGI report stating 'no indications of heating', surrounded by ten brilliant cut diamonds, each shoulder set with three brilliant cut diamonds, the outer setting edge of both cluster and shoulders with mille grain decoration, the total diamond weight an estimated 0.80 carat; the head of the ring measuring approx. 13.3 by 11 mm.