NECKLACE: 18k yellow gold tested Fairchild & Co. necklace with pendant; 17 inches long, 9.5mm wide; (1) oval cabochon opal, 21.5m x 12.8mm x 6.7mm = an estimated 9.95carats, Good/blue-green flashfire; (73) round brilliant cut diamonds, 1.1mm-3.8mm = an estimated 0.60 carats, Good/G-H/SI1; comes with Fairchild & Co. envelope; 60.8 grams.