A natural pearl and diamond pendant. Photo: Bonhams.

The drop-shaped pearl of greyish brown tint, measuring 12.0 x 10.7 x 9.5mm, suspended from a graduated line of old brilliant and brilliant-cut diamonds, diamonds approximately 0.20 carat total, length 2.5cm. Estimate £8,000 - 10,000 (€9,700 - 12,000)

Accompanied by a report from Istituto Gemmologico Nazionale stating that the pearl is natural, saltwater. Report number 18359, dated 12 March 2014.

Bonhams. FINE JEWELLERY. London, New Bond Street, 30 Apr 2014 - www.bonhams.com