1. The NGTC inlaid diamond grading certificate is issued by the National Jewelry Quality Supervision and Inspection Center.
The National Jewelry Quality Supervision and Inspection Center (referred to as the Inspection Center) is a national-level jewellery and jade professional quality inspection agency authorized by the relevant state authorities. It is the authority of Chinese jewelry and jade detection. It plays a guiding role in regulating the domestic jewelry market and promoting the healthy development of the jewelry industry. The diamond grading system used in the national inspection ranks the diamonds according to the cut, color and clarity of the diamonds. The highest grade is the rarest and most valuable diamond, and the lowest grade has the lowest value.
2. The GJC Jewelry Inspection Certificate is issued by the National Light Industry Jewelry Jade Jewelry Quality Supervision and Inspection Center.
The center is the measurement and certification unit of the State Bureau of Quality and Technical Supervision. With the pursuit of scientific, fair and authoritative quality of appraisal, the center personnel have been committed to the non-destructive identification of diamonds, colored stones and jade by reference to foreign standards while adhering to national standards. From the consumer, supplier, sales, auction, pawnshop and public security laws and other relevant departments of the gemstone identification and consulting teaching tasks, the center appraisers with excellent professional skills and professionalism in Shanghai and the country have won a good reputation and evaluation .
The center appraisers are composed of jewelry appraisers and appraisers and appraisers who have obtained the National Registered Jewelry Quality Inspector Certificate, the US GIA Certificate, the British FGA Certificate, the Belgian HRD Certificate and the Chinese GIC Certificate. They adhere to the national standards and refer to international standards for jewelry. Identification.
3. The GAC inlaid diamond grading certificate is issued by the China Gemstone Association.
China Baoyu Association is referred to as “China Baoxieâ€. The English name “Gemmological Association of China†is abbreviated as “GACâ€. The China Gemstone Association is responsible for the supervision and inspection of the quality of self-discipline products in the national jewelry and jade jewelry industry, and invites local jewelry associations (business associations) to cooperate. Assist in product quality and self-discipline. China Gemstone Association is responsible for the supervision and inspection of the quality of self-discipline products in the national jewelry and jade jewelry industry, and invites local jewelry associations (business associations) to cooperate to assist in product quality and self-discipline.
4. The GTC gemstone appraisal certificate was issued by the Jewelry Testing and Research Center of the All China Federation of Industry and Commerce Jewelry Industry Association.
The Jewelry Testing and Research Center of the All-China Federation of Industry and Commerce Jewelry Chamber of Commerce is a national jewelry testing institution accredited by the China National Laboratory Accreditation Committee and accredited by the China National Certification and Accreditation Administration. Always adhere to the fair, scientific, efficient and honest quality policy to provide quality services to the community. It is a first-class national jewelry inspection authority.
The testing center is tested by professors, researchers, doctors and appraisers who have been engaged in jewelry testing for a long time. With advanced testing equipment and a good testing environment. And in the standard management mode. Always adhere to the fair, scientific, efficient and honest quality policy to provide quality services to the community. It is a first-class national jewelry inspection authority.
5. GIC inlaid diamond grading certificate, issued by China Geology University Beijing Geji Gem Inspection Center.
The center focuses on identification, consulting, training, exhibition, production and processing, and serves the society extensively. It has been praised as “the cradle of treasure education†at home and abroad.
China University of Geosciences established the Gemological Research Office in 1983. In 1989, it developed the Gemological Institute of the second-level institution. In 1992, it was approved by the Ministry of Geology and Minerals to establish the Jewelry Institute. In 1993, the Jewelry Testing Center was established. The center identified, consulted and trained. It is mainly engaged in exhibitions, production, and processing, and serves the society extensively. At present, it has trained thousands of technical backbones and hundreds of senior appraisers for various jewellery quality inspection institutions and production and processing wholesale units throughout the country. It has been praised as “the cradle of treasure education†at home and abroad. Every year, we consult and appraise hundreds of thousands of pieces of jewelry and jade.
6, CJJ certificate, National Light Industry Diamond Certificate
The national authority diamond appraisal agency, the diamond certificate recognized in the industry. The National Light Industry Diamond Certificate is one of the most authoritative certificates in the domestic diamond classification certificate.
7. The Gemstone Grading Certificate of East China University of Science and Technology is issued by the Gem Testing Center of East China University of Science and Technology.
East China University of Science and Technology Gem Testing Center is administratively affiliated with East China University of Science and Technology. East China University of Science and Technology is a national key university directly under the Ministry of Education and entering the “211†project. It is also an institution that conducts gemological education and scientific research earlier in the country. In terms of testing, the staff engaged in the testing of the center have undergone good job training. Most of them are national registered jewellery and jade quality inspectors. They have many years of experience in gem testing. In the process of detection, they are guided by the principles of objectivity and fairness. Welcome and praise from all walks of life. The center also carried out testing technology research on some difficult problems in the market, solved many difficult problems, and did a lot of work to regulate the jewelry market.
8. Shanghai Geology and Jewelry and Jade Testing Center was issued by Shanghai Geology and Minerals Jade Testing Center.
Shanghai Geotechnical Engineering Testing Center Jewelry Appraisal Department (Shanghai Geology and Jewelry Jade Testing Center) is the professional testing department of the Shanghai Central Laboratory of the former Ministry of Geology and Mineral Resources, relying on the strong technical foundation and rock mineral identification equipment of the original central laboratory. Under the situation that equipment and geological work are actively serving the market, the testing center will shift its focus from purely geological work services to comprehensive services for the society and provide fair testing data for the society.
The testing center has passed the assessment of the quality verification and testing capabilities and reliability of the product quality inspection agency by the State Bureau of Quality and Technical Supervision, and obtained the CMA of the metrological certification. It legally guarantees that the laboratory has fair data for the society. Qualifications. At the same time, the testing center is equipped with a national-level jewellery jade quality appraisers to fully guarantee the quality of jewellery and jade inspection, and to ensure the quality and reliable testing services for the society.
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