Yes, every DI MECO piece arrives with a certificate of authenticity and a lifetime warranty for the customer. Our certificate of authenticity attests that the jewelry is genuine and includes all the details of the jewelry, the customer's name, the date of purchase, and the DI MECO JEWELRY company stamp. IMPORTANT: The warranty included with your purchase guarantees the endless lifespan of your gold jewelry if it is treated with care; therefore, it does not cover scratches or damages to the jewelry caused by external factors such as drops or losses.