Buy it here →One 7.86 carats oval tanzanite, violet blue exceptional (45% violet/55% blue) color, VS1 clarity, cut grade very good, measuring 10.4 mm wide, 13.7 mm long, 7.8 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 75%, table width 59.6%. The overall quality rating of this tanzanite is 950 out of 1000. Tanzanite is heated to enhance color. Rf