Violet Blue Oval Tanzanite Gemstone 4.75 CaratsOne 4. 75 carats oval tanzanite, violet blue exceptional color, VS clarity, cut grade excellent, measuring 8. 5 mm wide, 11. 4 mm long, 6. 7 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 79%, table width 55%. The overall quality rating of this tanzanite is 931 out of 1000. This is an original cutting design by Steve Moriarty. Tanzanite is color enhanced by heating. Customize a Ring