A model shows a jadeite, enamel gem-set and diamond brooch during a preview of the upcoming Sotheby's Hong Kong Autumn Sales in Hong Kong on September 9, 2015. (Photo: China News Service/ Tan Daming)
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A model shows a jadeite, enamel gem-set and diamond brooch during a preview of the upcoming Sotheby's Hong Kong Autumn Sales in Hong Kong on September 9, 2015. (Photo: China News Service/ Tan Daming)
