A five strands of gray, brown, yellow, rosé, green, purple natural pearl and diamond necklace. Photo Bonhams

Comprising five strands of graduated natural pearls of gray, brown, yellow, rosé, green and purple hues, measuring approximately 2.7 - 3.2 and 6.8 - 8.0mm, to a 18k white gold geometric clasp set with old pear and European-cut diamonds, the diamonds estimated to weigh approximately 2.00 carats in total, necklace length 44.0cm. Lot 640. Sold for HK$ 860,000 (€98,907)

Accompanied by a certificate from SSEF, stating that the six hundred and twenty-three saltwater pearls are natural and the selected pearls show no indications of colour modification. Report number 61701, dated 12 Jan 2012 

BONHAMS. FINE JEWELLERY & JADEITE, 26 May 2012 14:00 HKT, HONG KONG, ADMIRALTY