Materials used in all JxAllure Jewelry are carefully selected to ensure the best quality possible. JxAllure is 925 Sterling Silver, Leather, Gold-Filled or Stainless Steel with 18k Gold Plating. An extra layering of tarnish resistance is added to extend the life span of the jewelry. Sterling Silver naturally oxidizes overtime. Stainless Steel and Gold-Filled is resistant to tarnishing and rust.