An aquamarine and diamond ring The octagonal step-cut aquamarine, weighing 7.98 carats, in a four-claw setting, within an openwork double-cluster of single-cut diamonds, between similarly-set diamond shoulders, mounted in 18 carat white gold, diamonds approx. 0.40 carat total, maker's mark DJM, partial UK hallmark, ring size O½ Accompanied by a report from IGR stating that the aquamarine is natural, with gentle heat. Report number J001806, dated 22nd November 2013.  From the private collection of David Jerome.