Violet Blue Oval Tanzanite Gemstone 2.43 CaratsOne 2. 43 carats oval tanzanite, violet blue exceptional (30% 70%) color, VS2 clarity, cut grade very good, measuring 7. 1 mm wide, 9 mm long, 5. 4 mm deep; with good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 76%, table width 56. 3%. The overall quality rating of this tanzanite is 912 out of 1000. Tanzanite is color enhanced by heating. Customize a Ring or Pendant with This Gemstone? Did you know that