Blue Violet Square Barion Tanzanite Gemstone 6.90 CaratsWeight: 6. 90cts Cut: Square Barion Color: 30% Blue 70% Violet Clarity: VS2 Size: 11 mm wide, 11 mm long, 8 mm deep Quality: 967 1000 Cut by: Steve Moriarty One 6. 90 carats square barion tanzanite, blue violet exceptional color (30% 70%), VS2 clarity, cut grade excellent, measuring 11 mm wide, 11 mm long, 8 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 73. 15%, table width 33. 3%.