Blue Violet Round Tanzanite Gemstone 1.58 CaratsOne 1. 58 carats 16 mains round brilliant tanzanite, blue violet vivid (40% 60%) color, FLAWLESS TO VVS clarity, cut grade very good, measuring 7. 6 mm wide, 7. 6 mm long, 4. 4 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 57. 9%, table width 53. 9%. The overall quality rating is 928 out of 1000. Tanzanite is color enhanced by heating.. Customize a Ring or Pendant with This