Blue Violet Exceptional Round Tanzanite Gemstone 3.47 CaratsOne 3. 47 carats round brilliant cut tanzanite, blue violet exceptional color, 10X LOUPE CLEAN clarity, cut grade very good, measuring 8. 9 mm wide, 8. 9 mm long, 6. 5 mm deep. The proportions of the tanzanite are as follows: total depth 73%, table width 48%. The overall quality rating of this tanzanite is 938 out of 1000. Tanzanites are enhanced by heating. Customize a Ring or Pendant with This Gemstone? Did you know that we design custom Tanzanite