One 3.28 carats trilliant cut tanzanite, violet blue vivid (30/70) color, VS1 clarity, cut grade excellent, measuring 9.9 mm wide, 9.9 mm long, 5.7 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 58%. The overall quality rating of this tanzanite is 940 out of 1000. Tanzanite is color enhanced by heating
