Stainless steel is a hard and extremely durable material that resists scratches, corrosion and dirt. It has a long service life , is resistant to fresh and salt water. Stainless steel jewelry is also suitable for allergy sufferers who cannot tolerate ordinary metals. Stainless steel does not react with body fluids, so no metal components are released into the skin. Due to its properties, it is sometimes called the material of the 21st century.