316L Stainless Steel Jewelry All of our stainless steel jewelry is 316L which is one of the highest grades of stainless steel (the L meaning low carbon). Our 316L stainless steel is the same stainless steel used in surgical medical equipment and is guaranteed never to rust, change color or tarnish. Stainless steel is the most hypoallergenic element known to man and will not irritate even the most sensitive skin.