An antique natural pearl, diamond and enamel brooch

The bouton-shaped pearl weighing 28.87 carats within an old-cut diamond flowerhead surround to the diamond-set foliage and entwined enamelled serpents, one holding a drop-shaped pearl weighing 24.85 carats, circa 1890, 11.0 cm long, with French assay mark and maker's mark, in fitted case. Estimate £25,000 - £35,000 ($39,575 - $55,405)

Accompanied by report Nos. 52118 and 52119 dated 27 August 2008 from the Swiss Gemmological Institute (SSEF) stating that the pearls were found to be natural saltwater pearls

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