Violet Blue Stepped Antique Cushion Tanzanite Gemstone 8.6 CaratsOne 8. 36 carats stepped antique cushion tanzanite violet blue exceptional (25% 75%) color, VS clarity, cut grade excellent, measuring 10. 3 mm wide, 14 mm long, 7. 7 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 74. 8%, table width 32%. Natural unheated color is also pictured. The overall quality rating of this tanzanite is 975 out of 1000. Cut by Steve Moriarty. Customize a Ring