Franco Bui jewel bearings was founded in 1964 by Franco Bui. Jean Monnat Diamond Abrasives took over from Franco Bui in 2000 and  is now  specialized in mini-micro diamond abrasives of ceramic and metallo ceramic binders to shape sapphires, rubbies, ceramic, extreme hard alloys, etc. We manufacture broaches and grinders for the recessing, roughing and drilling of industrial jewels.

Our major innovation in the recent years is the development of metallo ceramic diamond abrasives to match specific applications.