Christopher Michael Design 14 karat white gold ring set with one 5.17 carats square cushion tanzanite, blue violet exceptional color, flawless to vvs clarity, cut grade very good, measuring 9.6 mm wide, 9.6 mm long, 7.8 mm deep; with very good polish and very good symmetry. The proportions of the tanzanite are as follows: total depth 81.2%, table width 57%. The overall quality rating of this tanzanite is 944 out of 1000.  Tanzanites are color enhanced by heating. The tanzanite is accented by four round brilliant cut diamonds with a total weight of .53 carats having F-G color and Vs1-Vs2 clarity. The mounting weighs 14.34 grams