All of our products are made in accordance with industry standards. Our products carry a 30 day warranty against manufacturer's defects. The longevity of jewelry products varies greatly, depending on the care and treatment by the wearer. All of our silver products are made from genuine .925 sterling silver. Our gold plated products are made with 14k gold plating over .925 sterling silver. Gold plating will eventually wear and expose the silver underneath and this is not considered a defect. Any gold plated jewelry we sell can be re-plated if needed. All silver tarnishes and is not considered a defect. Tarnish can be easily removed with the appropriate cleaner.