A cabochon in watchmaking refers to a polished, non-faceted gemstone or ornamental stone that is often used as a decorative element on watches. Unlike faceted stones, cabochons have a smooth, rounded surface and are typically shaped into a dome. This style of cutting enhances the stone's color and luster, making it an attractive feature for watch embellishments.

Cabochons are commonly used in various parts of a watch, such as the crown, dial, or bezel, to add a touch of elegance and luxury. The choice of stone can vary widely, including materials like onyx, sapphire, ruby, or even semi-precious stones, depending on the design and brand of the watch. The use of cabochons is particularly prevalent in high-end and luxury watches, where attention to detail and craftsmanship are paramount.

In addition to their aesthetic appeal, cabochons can also serve functional purposes. For instance, a cabochon set into the crown of a watch can provide a smoother surface for winding, enhancing the tactile experience. Overall, cabochons contribute to the unique character and visual appeal of a timepiece, reflecting the artistry and tradition inherent in horology.