Opal, diamond and pink sapphire necklace. Photo Sotheby's

Of floral motif design, suspending on an articulated flower set with a jelly opal weighing approximately 9.20 carats, surrounded by circular-cut pink sapphires together weighing approximately 1.30 carats, to petals set with brilliant-cut diamonds, highlighted by a flower bud set with three fire opals together weighing approximately 1.40 carats, the necklace decorated with brilliant-cut diamonds of brown hue, supporting numerous oscillating pear-shaped rose-cut diamonds, the diamonds together weighing approximately 12.05 carats, mounted in 18 karat blackened gold, length approximately 380mm. Estimate: 100,000 - 140,000 HKD

Sotheby's. Magnificent Jewels and Jadeite Hong Kong | 08 Apr 2013 - www.sothebys.com