A relatively recent release from Cartier, the Ballon Bleu de Cartier was only released back in 2006. Featuring a curvaceous silhouette, the distinct shape of this watch is undoubtedly a key part of its huge popularity with discerning collectors the world over. The name of the Ballon Bleu de Cartier is derived from the timepiece’s two standout details of the watch, the blue synthetic sapphire ‘cabochon’ which takes pride of place perched handsomely atop the watch crown, and the spherical ‘balloon’ curves that make up the watch case itself.