Perfect Color Tanzanite Gemstone 12.72 CaratsOne 12. 72 carats round brilliant cut tanzanite, blue violet exceptional color, Flawless to Vvs clarity, cut grade very good, measuring 13. 4 mm wide, 13. 3 mm long, 10 mm deep. Deep rich color with strong blues and violets with red flash. A top gem in a difficult shape to find. Totally brilliant The overall quality rating of this tanzanite is 956 out of 1000. Tanzanite is heated to enhance color Customize a Ring or Pendant with This Gemstone? Did you