You can contact the school to repair the gold on the cover of the degree certificate. The gold on the cover of the degree certificate is missing. Please contact the degree certificate office of your school or educational institution or relevant departments. They will be able to provide you with further guidance and solutions. You may need to provide relevant supporting documents and personal information so that they can help you rebuild or repair the cover of your degree certificate. Please contact the school or educational institution as soon as possible so as to deal with this problem in time.