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A  emerald-cut diamond ring, by Harry Winston

The emerald-cut diamond, weighing 3.42 carats, between fancy-cut diamond shoulders, mounted in platinum, stamped 'Winston', ring size 5.. Estimate: HK$575,000 - 675,000, $74,000 - 87,000 - Unsold

Note: Accompanied by a report from GIA, stating that the 3.42 carats diamond is E colour and VVS1 clarity. Report number 15828639, dated 26th August 2008.

Bonhams. Fine Jewellery and Jadeite and Modern Wristwatches, 21 May 2009. Island Shangri-La Hong Kong Hotel, Admiralty, Hong Kong www.bonhams.com