Tanzanite Gemstone 5.31 Carats (Being mounted ring)Available soon! One 5. 31 carats emerald cut tanzanite, blue violet exceptional color, SI1 clarity, cut grade excellent, measuring 8. 9 mm wide, 10. 55 mm long, 7. 1 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 79%, table width 44. 5%. Cut by Steve Moriarty. The overall quality rating of this tanzanite is 933 out of 1000. Perfect color with strong red flash that is unusual to see