Over the years, Maurice Lacroix has created some outstanding watches and this year promises to be no exception. The Maurice Lacroix Only Watch 2023 is presented in a 43mm sapphire case, a first for the Maison. The use of the clear material extends to the bezel and crown. The making of a sapphire crystal case is protracted, necessitating numerous hours of polishing. Beyond its colourless purity, sapphire is incredibly hard, measuring 9 on the Mohs scale, surpassed only by diamond which has a hardness of 10.