It takes time to create the extraordinary - Episode 8 Bleu Nuit, Nuage 50, the Royal Oak iconic hue. After a year of development, the right blue hue was achieved through PVD (Physical Vapor Deposition), perfecting the whole process for an homogeneous colour across the collection. 3 layers of PVD reach a maximum thickness of 0.25μ deposited on the dial. #AudemarsPiguet #RoyalOak