Watch Wiki

The Best Watches and Watch Brands

User Tools

Site Tools


Watch glass

Watch glasses have to be robust against scratching and rupture.

Scratch resistance is measured on the Mohs hardness scale in steps of 1-10. The following types of glass are used with watches

  • Plexi / acrylic glass
    (polymethyl methacrylate (PMMA)); 3-4 Mohs, little scratch resistance, but unbreakable. Scratches can be polished with special acrylic polishing paste. From this material extremely arched (domed) watch glasses can be produced.
  • Sapphire crystal
    is an artificially produced crystal 9 Mohs (close to diamond, extremely scratch resistant and break-resistant).
We use cookies and other tracking technologies to improve your browsing experience on this website and for data collection for personalized ads.More information
watch_glass.txt · Last modified: 11.10.2021 17:01 (external edit)

Copyright © Watch Wiki: The Best Watches and Watch Brands | Impressum | Privacy Policy