The metal buttons we use in our jewelry are authentic antiques that are 100 or more years old! Most are made with brass and/or pewter that have developed a lovely patina. Our settings are cast pewter that has been brass or silver plated, or stamped brass that has been antiqued. All of the above elements are best cared for with the gentle use of a polishing cloth, or a soft washcloth that is just barely damp. Never inundate any of our jewelry in water, as that might loosen the bond of button to setting.