Color Changing Oval Tanzanite Gemstone 8.06 CaratsOne 8. 06 carats oval tanzanite, blue violet exceptional plus color, 10X LOUPE CLEAN clarity, cut grade excellent, measuring 9. 9 mm wide, 12. 6 mm long, 9 mm deep; with very good polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 90%. Deeper than most sacrificing some apparent face size but this extra depth has given this gem outstanding brilliance. A very strong color change from daylight to incandescent