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A coloured diamond and diamond ring. Photo courtesy Bonhams.

The cushion-shaped coloured diamond, weighing approximately 6.60 carats, within a four-claw setting, to a brilliant-cut diamond gallery and shoulders, diamond untested for natural colour, ring size 6. Estimate: HK$ 450,000 - 550,000 (€42,000 - 51,000) ($58,000 – $71,000) 

Bonhams. FINE JEWELLERY & JADEITE. Hong Kong. 23 Nov 2013 14:00 CST - http://www.bonhams.com