Mixed Oval Tanzanite Gemstone 4.83 Carats (On HOld)One 4. 83 carats mixed oval tanzanite , flawless to VVS clarity, cut grade excellent, measuring 9. 5 mm wide, 12. 7 mm long, 6. 1 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 64. 2%, table width 53. 7%. The tanzanite also has a crown angle of 45 and 25 and a pavilion angle of 41 to 42. 4. Cut by Steve Moriarty. The overall quality rating of this tanzanite is 927 out of 1000 .