The rings are "silver plated" as i have stated and they could turn your finger green and or rust it is possible with any thing that is plated with silver, but I use a home remedy theat has worked for years for me and that is anything i get that is silver "plated"weather it is jewelry or anything else, if you take clear nail polish and coat the item it preserves the silver plating from tarnish and or rust , and therefore won't turn your finger green and gives the item an extra polish and shine :)