A pearl and diamond corsage ornament, second half of the 19th century. Photo: Bonhams.

Realistically designed as a floral spray, the two central blooms, mounted en tremblant, with unfurling old brilliant-cut diamond petals and pearl stamens, the stem and leaves set with similarly cut diamonds and pearl buds, mounted in silver and gold, diamonds approximately 10.00 carats total, length approximately 12.0cm, fitted case. Estimate £10,000 - 15,000 (€12,000 - 18,000)

The central drop-shaped pearl, measuring 12.2 x 12.7 x 17.3mm, is accompanied by a report from The Gem & Pearl Laboratory stating that it is natural, saltwater, with worked areas on its sides. Report number 09629, dated 25 March 2014.

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