Simple silver ring, with gift box. - Material: Silver - Design: Simple - Included: Gift box - Size: Size 19 The ring material is indicated as "316L," a type of high-quality stainless steel also known as "surgical stainless steel." Surgical stainless steel is used in medical instruments and is gentle on the body, making it less likely to cause metal allergies. 316L is a designation according to JIS standards and is often used in accessories and jewelry. Thank you for viewing.