Belle Époque necklace with diamonds and onyx,

Belle Époque necklace set with old- and rose-cut diamonds totalling approx. 0.70 ct, medium to good colour, low to medium clarity, Onyx, 18K YG and platinum, 10,2 g, l.: 38 cm, ca. 1900, rose-cut diamonds partly chipped, 1 onyx cracked, application loose, very fine ajour and millegriffe.