Necklace with 15.22 ct Colombian Muzo Emerald and Natural White Diamonds (total diamond weight is 17.74 cts), made in 18K Gold. Comes with International Gemological Institute Certification. 18K white gold claw-set emerald-cut Colombian Muzo emerald totalling 15.22 carats claw-set round-cut white diamonds totalling 17.74 carats marquise-cut white diamonds halo setting tennis necklace