The panther has been an icon of the House of Cartier since the motif was first used on a wristwatch in 1914. Since then the panther has become Cartier's signature animal and has been integral to many of Cartier's designs, appearing on bracelets, brooches and powder boxes as well as jewels commissioned for royalty. Available at auction from Christie's in London is this exquisite diamond Cartier Panthère ring. A diamond-set panther's head rests on its forepaws with pear-cut emeralds for eyes and an onyx nose. With a finger size of O-P, the white gold ring is fully set with pavé diamonds. This elegant and feminine Cartier Panthère ring is estimated to sell for between £12,500 and £18,500.