Buy it here →One 9.84 carats oval tanzanite, violet blue exceptional (15%violet/85%blue) color, VS1 clarity, cut grade very good, measuring 11.5 mm wide, 15.4 mm long, 8.1 mm deep; with very good polish and very good symmetry. The overall quality rating of this tanzanite is 957 out of 1000. Tanzanite is heated to enhance color. All sapphire blue in daylight.