Violet Blue Oval Tanzanite Gemstone 4.47 CaratsOne 4. 47 carats oval tanzanite, violet blue exceptional (25% 75%) color, FLAWLESS TO VVS clarity, cut grade excellent, measuring 9 mm wide, 11. 5 mm long, 6. 3 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 78. 3%, table width 50%. The overall quality rating of this tanzanite is 954 out of 1000. Tanzanite is color enhanced by heating. Customize a Ring or Pendant with This Gemstone?