18K Yellow Gold Men's Tanzanite Ring 5.17 CaratsGentlemans' 18k yellow and white gold tanzanite ring, with one 5. 17 carats square cushion tanzanite cut by Steve Moriarty, violet blue exceptional color, VVS clarity, cut grade excellent, measuring 9. 3 mm wide, 9. 3 mm long, 7. 5 mm deep. The proportions of the tanzanite are as follows: total depth 80. 6%. As fine as it gets with highlights of red flash. The overall quality rating of this tanzanite is 998 out of 1000. Tanzanite is enhanced by