Many assembled products feature metal or plastic bearings, which enable linear or rotational movement while reducing friction and handling stress. But, only products with precision mechanics feature miniature jewel bearings made of sapphire, ruby or hard glass. These bearings prevent metal-on-metal friction that quickly and significantly reduces contact surface areas.
Since 1914, La Pierrette S.A. (LPSA) has supplied jewel bearings to many of the world’s most prestigious watch and timepiece makers. Several of these companies make products that bear the Geneva Seal stamp and meet the high quality, precision and reliability requirements of the Watchmaking School of Geneva.