Natural pearl and diamond necklace, Boucheron Paris. Photo Sotheby's

The triple-stranded necklace composed of two hundred and eight graduated round natural pearls measuring approximately 3.70 to 9.70mm, to a clasp set with circular-cut diamonds together weighing approximately 2.00 carats, length approximately 450mm, signed. Estimate 4,300,000-5,000,000 HKD

NOTE: Accompanied by SSEF report numbered 61329, dated 24 November 2011, stating that the pearls are natural saltwater pearls.

Sotheby's. Magnificent Jewels and Jadeite. Hong Kong | 03 Apr 2012, 02:00 PM www.sothebys.com