Square Step Cut Tanzanite 6.40 CaratsWeight: 6. 40cts Color: 50% Blue 50% Violet Cut: Square Step Size: 11. 2mm wide x 11. 2mm long x 6. 8mm deep Clarity: VS1 Rating: 966 1000 Treatment: Heated Cut Grade: Very Good One 6. 40 carats square step cut tanzanite, blue violet exceptional (50%blue 50%violet) color, VS1 clarity, cut grade very good, measuring 11. 2 mm wide, 11. 2 mm long, 6. 8 mm deep; with very good polish and very good symmetry. The overall quality rating of this tanzanite is