An 18 carat white gold tanzanite and diamond cluster ring

Centred by a cushion shaped tanzanite measuring approx. 12.7 x 11.5 x 17.4 mm, estimated to weigh 8.80 ct, surrounded by 20 modern brilliant-cut diamonds. Total estimated diamond weight approx 0.6 ct., colour ca F-G, clarity ca VS.. Gross weight appr