Zhonggong Jewelry is a relatively small testing center. Generally, it will not impersonate him, which is safe and reliable. It's a real certificate, so you can wear it with confidence.

Some appraisal certificates are false, forged by unscrupulous traders. There are four certification marks on the certificate, and the last mark of the genuine certificate should be the mark of the Jewelry Testing Center of China Federation of Industry and Commerce.

In addition, the real certificate must have a steel seal. Unable to get through the phone can't be used as a basis for judgment. Often a fake certificate is a set of websites, telephones and QR codes.

Zhonggong Jewelry is a private appraisal institution, and CMA and CNAS are often seen on the jewelry and jade appraisal certificate.

The method of identifying the authenticity of authentication certificate:

1, to see if the inspection agency is legal.

The state has strict qualification requirements for jewelry and jade quality appraisal institutions, and the appraisal certificate issued is only valid if it passes the review. CMA, CAL and CNAS are common in the certificate of jewelry and jade appraisal.

2. Look at the exam content

Including the name, color, purity, total mass, density, refractive index and other items of the goods submitted for inspection, these items are very strict in the nationally certified jewelry and jade testing institutions.

3. Look at the signature of the appraiser

The appraisal certificate must be signed by two appraisers to be valid: one is the appraiser and the other is the reviewer.