All jewelry from MINT is guaranteed to be brand new and never worn by anyone. Since body jewelry is worn IN the body, jewelry sanitation cannot be assured once jewelry has been removed from it's original sealed packaging. Would you want to wear something that someone else has already worn? We think that would be so totally gross.
Most jewelry does come with a lifetime guarantee against manufacturer's defects (plated items would be an exception). For example, if a gem falls out of it's setting, bring it back! The manufacturer will replace it at no cost to you. On the other hand we cannot be held responsible in the case of a lost piece, ends coming unscrewed or other wearer's errors. We are sure you understand.