Blue Violet Round Brilliant Tanzanite Gemstone 4.92 CaratsOne 4. 92 carats round brilliant cut tanzanite, blue violet exceptional (60% 40%) color, FLAWLESS TO VVS clarity, cut grade excellent, measuring 10. 1 mm wide, 10. 1 mm long, 7. 1 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 70. 3%, table width 48. 5%. The overall quality rating of this tanzanite is 981 out of 1000. Tanzanite is color enhanced by heating. Lovely color change from