2, or want to identify jade, you can go to the jewelry and jade quality inspection center. Generally speaking, every provincial capital city has a jewelry and jade quality supervision and testing center, and the most authoritative of these institutions is the National Jewelry and Jade Quality Supervision and Testing Center, because this institution was originally affiliated to the Jewelry and Jade Jewelry Management Center of the Ministry of Land and Resources.
3. To issue a certificate to buy jade, you need to find a merchant to confirm whether there is a certificate. For friends who don't know much about jade, an authoritative certificate is of course very convincing. It should be noted that the certificate can only prove the authenticity of the material, but not reflect its market value.
4. The national re-inspection of jadeite means that after purchasing jadeite, although there is an appraisal certificate, if consumers want to further test it, they can get it to various institutions all over the country for re-inspection, that is, further appraisal and inspection.
5. There is usually a steel seal on the certificate. The steel seal of the formal certificate is deep and the imprint is clear. In addition, the appraisal shall be signed by the appraiser and the inspector. Official website, SMS and QR code scanning are also important methods.