Blue Violet Oval Tanzanite Gemstone 3.63 CaratsOne 3. 63 carats oval tanzanite, blue violet exceptional (40% 60%) color, FLAWLESS TO VVS clarity, cut grade very good, measuring 7. 9 mm wide, 10. 2 mm long, 6. 2 mm deep; with good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 78. 5%, table width 57%. The overall quality rating of this tanzanite is 917 out of 1000. Tanzanite is color enhanced by heating. Customize a Ring or Pendant with This Gemstone?