A model presents a 5.03-carat green diamond ring at a media preview of Christie's Hong Kong 2016 Spring Auction in Hong Kong, south China, May 4, 2016. A media preview of Christie's Hong Kong 2016 Spring Auction was held on Wednesday, with fascinating works of art on display. The auction will be held from May 27 to June 1 in Hong Kong. (Photo: Xinhua/Ng Wing Kin)
