Violet Blue Oval Tanzanite Gemstone 7.58 CaratsOne 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