A chaton in watchmaking is a small, circular metal component, often made of precious metals like gold, used to hold jewel bearings within a watch's mechanical movement. These jewel bearings, typically rubies, serve as friction-reducing elements that support the movement of the watch's gears and other components. The chaton acts as a bushing or ring that encapsulates the jewel, providing a secure and stable setting. Historically, chatons were used to enhance the durability and precision of watches, as they allowed for easy replacement of jewels without damaging the movement. In modern watchmaking, chatons are often used for decorative purposes, adding a touch of luxury and craftsmanship to high-end timepieces. They are particularly associated with traditional and luxury watch brands, where they are sometimes secured with screws for added stability and aesthetic appeal.