Search if there is a gem appraisal agency in your place! If so, you can take it for re-inspection! If not, you can send it to the gem appraisal institution by express delivery for re-inspection! Generally, the jewelry testing center of China Federation of Industry and Commerce is used for testing. Some spar are generally senior appraisers to distinguish between true and false! It is recommended to get it to a gem appraisal institution for appraisal! In order to become attached, it is a crystal stone.