Special Cut Tapered Barion Tanzanite Gemstone 2.88 CaratsOne 2. 88 carats brillant style tapered barion tanzanite, violet blue color, SI1 clarity, cut grade excellent, measuring 8 mm wide, 10 mm long, 5 mm deep. The proportions of the tanzanite are as follows: total depth 62. 5%. Cut by Steve Moriarty. Tanzanite is enhanced by Steve Moriarty. The overall quality rating of this tanzanite is 893 out of 1000. Customize a Ring or Pendant with This Gemstone? Did you know that we design custom Tanzanite jewelry?