Blue Violet Step Triangle Tanzanite Gemstone 2.91 CaratsOne 2. 91 carats step triangle tanzanite, blue violet vivid (45% 55%) color, FLAWLESS TO VVS clarity, cut grade excellent, measuring 8. 3 mm wide, 8. 2 mm long, 5. 9 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 71. 5%, table width 57%. The overall quality rating of this tanzanite is 958 out of 1000. Tanzanite is color enhanced by heating. Cut by Steve Moriarty Customize a Ring or