Diamond bangle. Photo: Sotheby's.

The openwork cuff-bangle set with brilliant-cut diamonds, highlighted with pear- and marquise-shaped diamonds, the diamonds together weighing approximately 66.45 carats, mounted in 18 karat white gold, length approximately 160mm. Estimation 500,000 - 600,000 HKD (48,369 - 58,042 EUR)