Tanzanite and diamond ring, of bombe design, centring a claw-set sugarloaf tanzanite weighing 16.57 carats flanked by channel-set baguette diamonds between pave-set brilliant-cut diamonds, the diamonds together weighing approximately 4.58 carats, mounted in 18ct white gold, size N., accompanied by a Aigs report numbered GF17011667, dated 25 January 2017, stating that the 16.57 carat tanzanite is natural, of Tanzania origin.