A model presents a 42.88-carat natural Colombian Muzo emerald and diamond pendent necklace during a preview of Tiancheng International Jewelry and Jadeite Spring Auction 2015 in Hong Kong, May 28, 2015. Tiancheng International proudly presents nearly 270 jewelry and jadeite pieces, estimated over HK$300 million(US$39 million). The emerald necklace, a rare find in market, is valued at more than HK$23 million. (Photo: China News Service/Tan Daming)
