Blue Violet Exceptional Round Brilliant Tanzanite Gemstone 3.74 CaratsOne 3. 74 carats round brilliant cut tanzanite, blue violet exceptional color, 10X LOUPE CLEAN clarity, cut grade very good, measuring 10. 1 mm wide, 10 mm long, 5. 8 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 58%. Tanzanites are color enhance by heating. The overall quality grade of this tanzanite is 891 out of 1000. This gem has a large apparent size while maintaining full