Blue Violet Round Tanzanite Gemstone 3.34 CaratsOne 3. 34 carats round brilliant cut tanzanite, blue violet exceptional color, VS clarity, cut grade very good, measuring 8. 9 mm wide, 9 mm long, 6. 1 mm deep; with good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 68. 5%, table width 56%. The overall quality rating of this tanzanite is 888 out of 1000. Tanzanite is color enhanced by heating. Customize a Ring or Pendant with This Gemstone? Did you know