The smiling model shows the Pigeon’s Blood ruby ring in Shanghai, on June 16, 2011. Several precious stones valued at around 100 million yuan ($15.45 million) are on display at Jewelry Shanghai 2011, including one dubbed the Pigeon’s Blood ruby, which weighs 25 carat. The famed jewel comes from Myanmar, and is the country’s most precious and popular gemstone. Worth as much as 78 million yuan, the piece is not for sale and is on display only, at the expo. [Photo / CFP]