A carved emerald and gold enamel pendant, India, 19th century. Photo Christie's Image Ltd 2014

The drop-shaped green gem carved with a radiating floral motif and set in a gold mount in the form of a floral spray, each bloom inset with a table-cut diamond, the reverse with red and green enamel floral decoration, the neck lace with cultured pearls and gadrooned green stones, possibly a later addition; 16in. (40.8cm.) long. Estimate £2,500 – £3,500

Christie's. ART OF THE ISLAMIC AND INDIAN WORLDS INCLUDING A PRIVATE COLLECTION DONATED TO BENEFIT THE UNIVERSITY OF OXFORD, PART V. 10 April 2014, London, King Street - www.christies.com