Buy it here →One 2.77 carats square cushion tanzanite, blue violet exceptional (45%/55%) more violet color, VS clarity, cut grade very good, measuring 8.5 mm wide, 8.5 mm long, 5.1 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 60%, table width 56.5%. Tanzanite is color enhanced by heating, The overall quality rating of this tanzanite is 945 out of 1000.