Watch jewels
Industrial stones

The main purpose of watch jewels is to minimise the metal’s friction on the jewel. By withstanding relatively high pressures, in the short term they help avoid the kind of jamming that would normally occur between two metal parts.

Since its foundation, the company has supplied jewels to some of the most prestigious watch manufacturers, enabling it to acquire the know-how from which it benefits today in other sectors.

Materials and properties

Monocrystalline sapphire has a unique combination of physical, mechanical and chemical properties that give it an extremely wide range of applications: high mechanical strength, high thermal stability, high optical transmission in the ultraviolet, visible and infrared range, very high resistance to abrasion, chemical inertia, zero porosity, very high insulation, the greatest hardness after diamond.



Pierre d’appui «PA»

Glace Olivé «GO»

Bombé «B»

Bombé Olivé «BO»

Glace deux Creusures «G2C»

Glace deux Creusures Olivé «G2CO»

Mi-Glace «MG»

Mi-Glace Olivé «MGO»

Mi-Glace Bombé «MGB»

Mi-Glace Bombé Olivé «MGBO»

Glace «G»

Pierre d’appui Olivé «PAO»

Pierre d’appui Bombé Olivé «PABO»

Pierre d’appui Ruban Poli «PARP»

Pierre d’appui Bombé Ruban Poli «PABRP»

Pierre d’appui Bombé des deux côtés Ruban Poli «PAB2XRP»

Pierre d’appui Bombé des deux côtés «PAB2X»

Contre-pivot «CP»

Contre-pivot Bombé «CPB»

Contre-pivot deux Bombés «CP2B»

Contre-pivot Bombé Creusure décentrée «CPBCD»

Creusure + Bombé «CPCB»

Goupille «GOU»

Pierre Glace  creusure cônique «GC»