Cartier Juste un Clou bracelet 18K pink gold, set with 624 brilliant-cut diamonds totaling 3.61 carats. About Cartier Juste un Clou nail collection: A nail becomes jewelry. Designed in 1970s New York, the first Cartier Juste un Clou bracelet reflected a wild, freewheeling era. Bold, modern, and innovative, Juste un Clou is a creative twist on a familiar object. This …