Blue Violet Antique Cushion Tanzanite Gemstone 3.85 CaratsOne 3. 85 carats antique cushion tanzanite, blue violet exceptional color, VS1 TYPE 1 clarity, cut grade excellent, measuring 8 mm wide, 10 mm long, 5. 8 mm deep; with very good polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 72. 5%, table width 53. 7%. The overall quality rating of this tanzanite is 906 out of 1000. Tanzanite is color enhanced by heating.