This ring is made of solid 316L stainless steel which is high strength and hardness with a flawless synthetic aquamarine crystal It is 100 percent safe to wear does not tarnish does not rust has no allergies and is lead free and nickel free Wrapped in a good quality gift box it is a great choice A slick ring that is comfortable enough to wear around daily with high polish exquisite workmanship and comfort fit The ring has a specific width and weight