14k White Gold Oval Tanzanite with Halo of Diamonds 1.86 CaratsLadies' 14k white gold tanzanite ring, with one blue violet excertional color, GIA Type I Clarity FLAWLESS TO VVS, oval tanzanite. The tanzanite weighs 1. 86 carats, measures 6. 9 mm wide by 9. 1 mm long by 4. 7 mm deep, has good cut, good polish and very good symmetry, and is 4prong set. The tanzanite has an overall quality rating of 908 out of 1000. In addition, there are fourteen prong set ideal round brilliant cut diamonds, F G color, SI1 SI2