A contemporary pink opal necklace by Tito Pedrini. Photo Christie's Image Ltd 2013

Composed of a series of graduated polished tabular pink opal panels alternately mounted with tapering bevelled accents, 41.5cm long, maker's case
Signed T Pedrini. Estimate: £10,000 - £20,000. Price Realized £5,625

Donated on behalf of the designer, the proceeds will go to The Guy's and St Thomas' Integrated Cancer Centre.

Christie's. JEWELLERY. 5 June 2013. London, King Street