Current location - Plastic Surgery and Aesthetics Network - Jewelry brand - How to identify the authenticity of the "Jewelry and Jade Appraisal Certificate", many of them are copies of the real certificate. Mass-produced
How to identify the authenticity of the "Jewelry and Jade Appraisal Certificate", many of them are copies of the real certificate. Mass-produced
As far as I know, if you buy jewelry in a regular brand, it usually comes with the certificate of National Testing Center (NGTC).

The certificate of national inspection can generally be verified online according to the certificate number, and you can send text messages.

There will be a website address and a phone number on the certificate.

I don't know which testing unit certificate you have.