Ring Ring 18k white and yellow gold, set with an oval tanzanite and six brilliant-cut diamonds Tanzanite weight: 13.33 cts TDD: 55, Gross weight: 9.75 g GIA certificate (2023): tanzanite (zoisite), bluish-violet color A 13.33 cts tanzanite, diamond and 18k gold ring GIA Certificate: zoisite tanzanite, Bluish Violet colour CONDITION REPORT: Good condition, slight wear patina Tanzanite size: 15.27 x 12.16 x 10.24 mm Total diamond weight: approx. 0.60 ct CONDITION REPORT : Good condition, slight wear Meas. of the tanzanite : 15.27 x 12.16 x 10.24 mm Total diamond weight : approx. 0.60 ct