A large turquoise, ruby and pearl gold ring, India, late 19th-early 20th century. Photo Christie's Image Ltd 2014

Of circular form, the large floral pattern consisting of a central foiled colourless hardstone surrounded by a band of turquoise stones and drop-shaped cabochon rubies, bordered by a string of natural pearls; 1.3/8in. (3.5cm.) diam. Estimate £1,200 – £1,800

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