Photo taken on May 4, 2016 shows a diamond brooch for auction at a media preview of Christie's Hong Kong 2016 Spring Auction in Hong Kong, south China. 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)
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