PIAGET Large diamond and sapphire necklace In 18k yellow gold, consisting of a line set with 154 brilliant-cut diamonds, centred on a geometric motif adorned with brilliant-cut and square-cut diamonds set off by 54 baguette-cut sapphires. Signed. Total weight of diamonds: approx. 22 cts - Sapphires: approx. 6.72 cts. Gross weight: 51.39 gr - Around the neck: 40 cm approx.