TOUS Hold necklace in dark silver with a 2.8-cm silver vermeil ring, a 1.6-cm sterling silver ring and a pack of 0.5-cm rose silver vermeil rings. Customize it with pendants, tinys or rings. (Dark Silver: Sterling silver plated with a layer of ruthenium, a mineral that gives strength and shine.) – (Vermeil: Sterling silver plated with a layer of 18kt yellow/rose gold.)