Blue Violet Oval Tanzanite Gemstone 4.03 CaratsOne 4. 03 carats oval tanzanite, blue violet exceptional color, FLAWLESS TO VVS clarity, cut grade excellent, measuring 8. 6 mm wide, 13. 5 mm long, 6 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 69. 8%, table width 50%. The overall quality rating of this tanzanite is 944 out of 1000. This tanzanite was heated to 1050 degrees fahrenheit to enhance its color. Cut by Steve Moriarty.