Halo Style Tanzanite & Diamond PendantOne halo style pendant set with a 3. 44 carats oval brilliant cut tanzanite, blue violet exceptional color, flawless to vvs clarity, cut grade very good, measuring 7. 9 mm wide, 9. 7 mm long, 6. 3 mm deep. The proportions of the tanzanite are as follows: total depth 79. 7%, table width 50. 6%. The overall quality rating of this tanzanite is 929 out of 1000.. Tanzanites are enhanced by heating. Accenting the tanzanite are 27 round brilliant diamonds