Spectacular jadeite and diamond necklace. Photo: Sotheby's.

Composed of nine highly translucent oval jadeite cabochons of intense emerald green colour, suspending a pear-shaped jadeite cabochon of matching colour and translucency, framed by brilliant-cut diamonds, decorated by pear-shaped, brilliant-cut and baguette diamonds, the diamonds together weighing approximately 43.65 carats, mounted in 18 karat white gold, length approximately 425mm.  Oval cabochons approximately 18.57 x 16.16 x 6.17mm to 12.98 x 11.05 x 5.18mm; pear-shaped cabochon approximately 29.79 x 13.65 x 6.54mm. Estimation 18,000,000 - 23,000,000 HKD (1,741,252 - 2,224,933 EUR)