2. If a jade bracelet is equipped with an appraisal certificate, it should be true. The appraisal certificate is issued by a professional organization, such as a jewelry industry association or a national organization, which proves that the data such as fineness, color, grain and weight of jadeite have been strictly tested and certified.
3. Number: Then check whether the jade certificate has a number. If it has a number, it means that it is a real jade certificate. Otherwise, if it has no serial number, it means it is a fake jade certificate.
4. If the jadeite certificate issued by the national authority is not natural jadeite, the result is only "jadeite", and the words "A" and "natural" will not be marked. Only natural A goods will issue the certificate of "Jade" result.