Due to its strength properties, sapphire is often used in those products where strong mechanical effect is present, such as, for example, scratches from dust particles. It may seem strange at first sight, but glasses of common watches undergo such kind of effects. Therefore, watch producers often use sapphire for these glasses in certain models. Generally, such glasses have flat surface and rectangular shape. They are produced in large quantities and are cheap. But in some cases, watch design requires use of spherical and cylindrical surfaces, the production of which is carried out through a different technology and is not used in mass production. We offer to our consumers such kind of products.