When watchmakers talk about jewels, they are not referring to the decorative gemstones on your watch’s bezel or band. Rather, the ‘jewels’ they’re referring to are inside your watch movement, unseen but certainly not unimportant. Read on to find out what watch lovers had to say about these fantastic and functional little gems.
Nicole Ghosn, Senior Jewelry Designer at Marc Jacobs. She’s responsible for the Runway and commercial collections.
Accuracy and Durability
Jewels in watches are mostly used as bearings in the watch movement, which allows for a reduction of friction between its mechanical components. The result is better accuracy in timekeeping, as well as longer durability of the mechanical components.
Corundum is often used because of its high hardness rating of 9 on the Mohs scale, only surpassed by Diamond (10 on the Mohs scale). Natural Ruby and Sapphire were mostly used in the past, and are replaced today by synthetic colorless Corundum.
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