Blue Violet Antique Cushion Tanzanite Gemstone 4.50 CaratsOne 4. 50 carats antique cushion tanzanite, blue violet exceptional color (35% 65%), FLAWLESS TO VVS clarity, cut grade very good, measuring 8 mm wide, 10. 1 mm long, 6. 5 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 81. 2%, table width 61%. Tanzanite is color enhanced by heating. The overall quality grade of this tanzanite is 940 out of 1000. Customize a Ring or Pendant with This