The National Jewelry and Jade Quality Supervision and Inspection Center is a national professional quality inspection institution authorized by the relevant competent departments of the state according to law, and it is the authoritative institution for jewelry and jade testing in China.

The inspection center provides entrusted inspection services to the society, undertakes national market supervision and inspection, arbitration inspection, import and export commodity inspection, and formulates and revises relevant national standards. It plays a guiding role in standardizing the domestic jewelry market and promoting the healthy development of the jewelry industry.

The quality policy of the inspection center is quality first, reputation first and service first. In the spirit of scientific, fair, high-quality and efficient service, we will provide good technical services for all sectors of society.

To check the authenticity of the certificate issued by the National Jewellery and Jade Supervision and Inspection Center (NGTC), you only need to enter two parameters, namely "certificate number" and "anti-counterfeiting code" on the 360 Jewelry Guard. Please pay attention to the case-sensitive input. If there is a "-"sign in the certificate number, you must enter it and use the keyboard to subtract it.

360 Jewelry Guard supports four types of NGTC certificates: jewelry and jade jewelry appraisal certificate, inlaid diamond grading certificate, precious metal jewelry purity appraisal certificate and diamond grading certificate. You can refer to the following certificate samples to find out how to query the NGTC certificate: