Violet Blue Trilliant Tanzanite Gemstone 3.76 CaratsOne 3. 76 carats trilliant cut tanzanite, violet blue exceptional (45% 55%) color, VS1 clarity, cut grade very good, measuring 10. 1 mm wide, 10. 2 mm long, 5. 9 mm deep; with good polish and very good symmetry. The overall quality rating of this tanzanite is 933 out of 1000. Tanzanite is color enhanced by heating. Customize a Ring or Pendant with This Gemstone? Did you know that we design custom Tanzanite jewelry? We would love to help you design the