A pair of natural pearl and diamond earrings. Estimate £10,000 - 12,000 (€14,000 - 16,000). Photo: Bonhams.

Each bouton-shaped natural pearl, measuring 12.1 x 10.1mm and 12.0 x 9.0mm, set with an old brilliant-cut diamond surmount, earring length 1.5cm

Accompanied by a laboratory report from The Gem & Pearl Laboratory stating that both pearls are natural, saltwater. Report number 10981, dated 18 March 2015.

Bonhams. FINE JEWELLERY, 22 Apr 2015 14:00 BST - LONDON, NEW BOND STREET