Argentium Silver Twist Pattern Stacking Ring Handmade, size to order. This Twist pattern band is made of 935 Argentium Silver for a shine that will last longer than traditional sterling silver. Argentium Silver is 93.5% pure silver as opposed to 92.5% of standard Sterling Silver. A touch of Germanium keeps them shinny longer. The band is 1.3mm wide. Tumble hardened and polished to a bright finish. Ring sizer included. Shipped in gift box.