14K TANZANITE & DIAMOND NECKLACE: Featured 5.92 CT tanzanite is set in a diamond lattice bezel set in 142 brilliant cut diamonds to form this pendant in white gold. 14K white gold chain is 18''. Diamonds approx .79 CTW. Tanzanite is GIA certified - report #1172872635. Sold with American International Gemologists appraisal for $17,900 dated March 13, 2018.