Natural Pearl and Diamond Bird Ring. Photo courtesy Tiancheng International Auctioneer Limited

The ring modelled as a bird resting on a nest, set with a baroque-shaped natural pearl with yellow diamond eyes and a white gold beak, the nest embellished with pavé-set diamond extending to the brushed white gold shank. Mounted in 18 karat white gold. Ring size: 6 1/2. Estimate US$24,000 - 34,000

Accompanied by SSEF report numbered 65654 dated 05 November 2012, stating that the pearl is natural, of light brown to brown, with green, yellow and orange overtones and dark brown non-nacreous part, with no indication of artificial colour modification.

Tiancheng International Auctioneer Limited. SPRING AUCTION 2013 JEWELLERY AND JADEITE. 15 Jun · 3 pm. Hong Kong Headquarters 30/F Bank of China Tower 1 Garden Road, Central Hong Kong http://www.tianchengauction.com/