Violet Blue Oval Tanzanite Gemstone 3.87 CaratsOne 3. 87 carats oval tanzanite, violet blue exceptional (25% 75%) color, FLAWLESS TO VVS clarity, cut grade excellent, measuring 9. 1 mm wide, 10. 9 mm long, 6 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 65. 9%, table width 57%. The overall quality rating of this tanzanite is 967 out of 1000. Color enhanced by heating. Daylight color is an excptional sapphire blue with