Argentium Silver and Non-Tarnish Alloys Non-tarnish alloys are fairly new to the market. Argentium is one brand but there are others available that are similar. These alloys are a minimum of 92.5% silver though some will be slightly higher in silver content. Phần còn lại bao gồm đồng và việc bổ sung nguyên tố Germanium. Các […]