The Cerachrom bezel insert is manufactured in a single piece by Rolex from extremely hard ceramic. This high-tech material is virtually scratchproof and keeps its vibrant colours over time. Rolex broke new ground in 2013 when it introduced its first two-colour, single-piece ceramic bezel insert – blue on one half and black on the other. One year later, the brand released a Cerachrom insert in red and blue – the GMT-Master’s original colours. It carried out pioneering research to develop a red ceramic corresponding to its aesthetic and quality criteria.

Over the years, Rolex presented other colour combinations: brown and black in 2018, green and black in 2022 – on a version with the crown and crown guard on the left side of the case and the date display at 9 o’clock – and grey and black in 2023. In 2025, Rolex released its first-ever ceramic dial on the GMT-Master II, in the same shade of green as the lower half of the two-colour green and black Cerachrom bezel insert that frames the watch face.