Boucheron and Girard Perregaux have collaborated on a one off watch Ladyhawke Tourbillon to showcase both of their talents. The Ladyhawke Tourbillon features Girard Perregaux’s manual tourbillon which is made of three gold Bridges. The case is made of white gold set with eight hundred and thirty three multicoloured diamonds and rubies totaling over twenty five carats. The Ladyhawke Tourbillon features an articulated bracelet with an invisible clasp mechanism.