A pair of natural pearl and diamond earrings, circa 1900. Estimate £7,500 - 9,500 (€10,000 - 13,000). Photo: Bonhams.

Each drop-shaped natural pearl, measuring approximately 13.00mm in length, suspended from a rose-cut diamond cap and old brilliant-cut diamond surmount, mounted in platinum and gold, earring length 3.0cm 

Accompanied by a report from The Gem & Pearl Laboratory stating that the pearls are natural, saltwater. Report number 09127, dated 13 December 2013.

Bonhams. FINE JEWELLERY, 24 Sep 2015 12:00 BST - LONDON, NEW BOND STREET