A natural pearl and diamond necklace. Estimate HK$1,200,000 – HK$1,800,000 ($155,563 - $233,345). Photo Christie's Image Ltd 2015

Composed of one hundred forty-five natural pearls, measuring approximately 3.65 – 8.30 mm, alternating with diamond beads, to the marquise, circular and single-cut diamond clasp, mounted in gold, 103.0 cm

Accompanied by report no. 82651 dated 21 October 2015 from the SSEF Swiss Gemmological Institute stating that the analysed properties confirm the authenticity of these saltwater natural pearls

Christie's. HONG KONG MAGNIFICENT JEWELS, 1 December 2015, Convention Hall