An emerald and diamond ring

centering a cut-cornered rectangular-cut emerald, weighing 15.77 carats, within a two-tiered surround of round brilliant-cut diamonds, and completed by a tapered mount; estimated total diamond weight: 3.70 carats; mounted in platinum. Estimate: $40,000 - 60,000

Accompanied by AGTA Identification report #96050211, dated July 17, 2008, stating: Colombian origin, moderate clarity enhancement.

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Bonhams.  Fine Jewelry, 14 Oct 2008. San Francisco, Los Angeles and New York - www.bonhams.com