Lot 1656. Impressive 56.25 carats fancy brown yellow briolette diamond and diamon necklace. Estimate 6,000,000 — 7,800,000 HKD. Lot sold 7,220,000 HKD. Photo Sotheby's 2011

Suspending a fancy brown yellow briolette diamond weighing 56.25 carats, to a stylised necklace of arbesque form, set with baguette, tapered baguette and brilliant-cut diamonds, the diamonds together weighing approximately 16.00 carats, mounted in platinum, length approximately 390mm, necklace signed Cartier and numbered 57-G3174.

Accompanied by GIA report numbered 15022715, dated 14 April 2010, stating that the 56.25 carat diamond is natural, Fancy Brown-Yellow colour, VS1 clarity; also accompanied by a signed box.

Sotheby's. Jewels and Jadeite, Hong Kong, 06 Apr 2011.