Oltin donani yaratish uchun, Buyum avval nozik yoki so‘m kumushdan yasalgan va keyin elektroliz deb nomlanuvchi jarayon yordamida oltin bilan qoplangan.. O'tmishda, veril olovli zargarlik jarayoni yordamida ishlangan, ammo keyinchalik bu jarayonga xos bo'lgan xavflar tufayli bu taqiqlangan, especially the issue of mercury causing blindness. Electrolysis, if done correctly, results in a consistent thickness and quality that is capable of lasting for a very long time, and can last for many years.