An antique rectangular-shaped emerald and diamond brooch, circa 1840

An antique rectangular-shaped emerald and diamond brooch, circa 1840

The rectangular-shaped emerald and old-cut diamond cluster centre to the diamond-set foliate surround, later brooch fitting detachable, centre possibly adapted,, 4.7 cm wide. Estimate £12,000 - £18,000 ($19,392 - $29,088)- Price Realized £34,850 ($56,318)

Christie's. Jewellery. 10 June 2009. London, King Street www.christies.com