One 7.58 carats oval tanzanite, violet blue exceptional color, 10X LOUPE CLEAN clarity, cut grade excellent, measuring 10.2 mm wide, 13.2 mm long, 8.2 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 80.4%, table width 51%. The overall quality rating of this tanzanite is 967 out of 1000. Tanzanite is enhanced by heating. If you are looking for the perfect mostly blue tanzanite this is the gem for you.