An 18ct gold diamond Andgem set necklace, cable link chain collet set with 3 oval and a pear cut tanzanite totalling approx. 4.03ct, 7 oval and a trilliant cut alexandrite totalling approx. 3.85ct, and 3 round brilliant cut diamonds totalling approx. 0.60ct to bolt ring clasp, length 60 cm, wt. 4.76g.