Violet Blue Oval Tanzanite Gemstone 1.57 CaratsOne 1. 57 carats oval tanzanite, violet blue vivid color (30 70), FLAWLESS TO VVS clarity, cut grade excellent, measuring 5. 9 mm wide, 6. 9 mm long, 5. 3 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 89%, table width 42. 4%. The overall quality rating of this tanzanite is 931 out of 1000. Tanzanite is color enhanced by heating. Customize a Ring or Pendant with This Gemstone? Did