Blue Violet Antique Cushion Tanzanite Gemstone 1.81 CaratsOne 1. 81 carats antique cushion tanzanite, vBV color (10% 90%), FLAWLESS TO VVS clarity @ 3X , cut grade very good, measuring 6. 1 mm wide, 8. 2 mm long, 4. 4 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 72. 1%, table width 57. 4%. Tanzanite is color enhanced by heating