Blue Violet Square Cushion Tanzanite Gemstone 6.37 CaratsTanzanite: 6. 37 cts Tanzanite Color: Blue Violet Exceptional Tanzanite Cut: Square Cushion Tanzanite Clarity: Vs1 Tanzanite Size: 10. 3 mm wide, 10. 4 mm long, 7. 6 mm deep Tanzanite Quality: 953 1000 One 6. 37 carats square cushion tanzanite, blue violet exceptional color, FLAWLESS TO VVS clarity, cut grade very good, measuring 10. 3 mm wide, 10. 4 mm long, 7. 6 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite