Violet Blue Oval Tanzanite Gemstone 6.37ctsWeight: 6. 37cts Cut: Oval Color: 35% Violet 65% Blue Size: 10mm wide x 12mm long x 7. 2mm deep Clarity: VS1 Rating: 940 1000 Treatment: Heated Cut Grade: Very Good One 6. 37 carats oval tanzanite, violet blue exceptional (35% 65%) more blue color, VS1 clarity, cut grade very good, measuring 10 mm wide, 12 mm long, 7. 2 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 72%, table width