Violet Blue Oval Tanzanite Gemstone 3.05 CaratsOne 3. 05 carats oval tanzanite, violet blue exceptional (45% 55%) color, FLAWLESS TO VVS clarity, cut grade excellent, measuring 7. 5 mm wide, 9. 5 mm long, 6. 3 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 0. 84%, table width 53. 3%. The overall quality rating of this tanzanite is 979 out of 1000. Tanzanite is color enhanced by heating. A strong change from sapphire blue to