What jewels do Carl F. Bucherer use in the manufacture of their movements?

The jewels used in the manufacture of our movements are functional stones made from industrial standard rubies. They are designed to reduce friction as well as mechanical wear and tear. These jewels are used for the bearings, levers and detents as well as for pallet stones of the escapement. Due to their level of purity and higher homogeneity of the crystal structure (compared to the natural ruby, with almost identical physical and chemical properties), at this present time synthetic rubies are used for watch jewels almost exclusively.

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