An emerald and diamond dress ring. Photo courtesy Bonhams.

The square step-cut emerald, weighing 4.02 carats, set on a wide band of fancy coloured brilliant-cut diamonds, diamonds approximately 5.25 carats total, fancy coloured diamonds untested for natural colour, ring size 6. Estimate HK$ 160,000 - 200,000 (€15,000 - 19,000)

Accompanied by a Gübelin Gemlab report stating that the natural emerald has minor indications of clarity enhancement and originates from Colombia. Report number 11081016, dated 26 August 2011.

Bonhams. FINE JEWELLERY & JADEITE. Hong Kong. 23 Nov 2013 14:00 CST