The ring is made of a material called stainless steel alloy. Someone called it Purluxium or Cobalt Chrome. In fact, it’s a stainless steel that is mixed with other Proprietary Alloys to make a Much More Durable Metal.
It is stronger than stainless steel (316L& 304). It will not tarnish, change colors, and it’s Very Resistant to Scratches. It has a look of platinum with it’s clean white lustre
Plus, you won’t be Allergic to this Metal either, it’s Hypo–allergenic! (non allergenic)