A 15.11 carats cabochon star ruby and diamond ring

The cabochon star ruby, weighing 15.11 carats, to an oval-shaped diamond border, mounted in 18k white gold, size 5½. Estimate: HK$660,000 - 760,000, $85,000 - 98,000 - Unsold.

Footnote: Accompanied by a certificate from the Gemresearch Swisslab, stating that the natural star ruby is pinkish-red in colour, of Vietnam origin and has no indication of thermal treatment. Report number GRS2007-022244, dated 28th February 2007.

Bonhams. Fine Jewellery and Jadeite, 4 Dec 2008. Hong Kong. Copyright © 2002-2008 Bonhams 1793 Ltd., Images and Text All Rights Reserved. www.bonhams.com