But how dare you easily pay cash for a company you have never met? At present, the most important measure is that merchants can provide business licenses, taxpayer qualification certificates and product quality certificates. What quality certificates are there in the diamond and jewelry industry? Diamond certificate type 1: GIA diamond certificate provided by Gemological Institute of America. Gemological Institute of America is an independent non-profit organization. As a world authority, it is famous for its justice. The college's breakthrough research and its own education, experiment and equipment research and development process are almost the chronicles of the growth of the jewelry industry. GIA diamond classification report and GIA diamond processing are considered as the first gem certificates in the world. Diamonds of all shapes and sizes are sent from all over the world to the college for analysis and classification. Diamond certificate type 2: HRD diamond certificate provided by Belgian Diamond High Council, which is officially recognized as representing Belgian diamond trading industry. Its headquarters is located in Antwerp, the world diamond center. HRD diamond color certificate focuses on the detailed characteristics that determine the value of colored diamond, such as color description, color design and luminescence. It plays an important role in detecting whether diamonds are natural colored diamond or imitation diamonds. Diamond certificate type 3: AGS diamond certificate provided by American Gemological Society. American Gemmological Society leads the industry by strict grading standards and providing detailed information. Primary consumers can understand the classification of diamonds with simple numbers and methods. Diamond wholesalers and processors often use the detailed diamond information provided by AGS certificates to buy diamonds in batches around the world. The fourth category of diamond certificate: IGI diamond certificate is provided by the International Gemological Institute in Antwerp, which is the oldest gemological institute in the world, and its authority of diamond certificate is recognized by the world. "IGI Diamond Report" is essentially a statement, which proves the authenticity of diamonds with the help of the world-recognized system and provides reliable and correct diamond identity and grade. The fifth category of diamond certificate: NGTC diamond certificate is provided by the National Jewelry and Jade Quality Supervision and Inspection Center (hereinafter referred to as the inspection center). It is a national-level professional quality inspection institution authorized by the relevant state departments according to law, and it is the authoritative institution for jewelry and jade inspection in China. The diamond grading system used in national inspection also follows international practice, and diamonds are graded in turn according to cut, color and clarity. Diamond certificate category 6: EGL diamond certificate provided by European Gemological Institute. EGL was established in 1974. Its customers are mainly professional wholesalers, retailers and cutting factories, and its mission is to help consumers buy diamonds and precious stones. In the United States and Belgium, EGL certification has a certain professional status and popularity. The appraisal certificate issued by it is enough to provide all the information of diamonds, including physical properties such as weight, color, clarity and size, for the reference of industries and consumers. Diamond certificate category 7: GAC diamond certificate provided by China Gemstone Association. China Gemstone Association is referred to as "China Gemstone Association" and its English name is abbreviated as "GAC". China Gemstone Association is responsible for the quality supervision and inspection of self-discipline products in the national jewelry industry, and invites jewelry associations (merchants) from all over the country to cooperate and assist in product quality self-discipline. China Gemstone Association is responsible for the quality supervision and inspection of self-discipline products in the national jewelry and jade jewelry industry, and invites local jewelry associations (merchants) to cooperate and assist in product quality self-discipline. Category 8 of diamond certificate: GIC diamond certificate provided by Gemstone Testing Center of China Geo University. Beijing Gemstone Inspection Center of China Geo University is mainly engaged in identification, consultation, training, exhibition, production and processing, and widely serves the society. Known as the "cradle of treasure education" at home and abroad. Diamond certificate is the guarantee of diamond quality, which mainly identifies the characteristics of diamond such as weight, cut, clarity, color, polishing and symmetry. The above is the most comprehensive diamond certificate type that I love diamonds. As far as the domestic market is concerned, jewelry suppliers mainly provide GIA diamond certificate and NGTC diamond certificate, while I love diamond network also provides HRD diamond certificate and NGGC diamond certificate. In terms of global market, the most authoritative diamond certificates are GIA, IGI and HRD. Jiahua wedding jewelry was rated as the most influential retail brand in the industry. Chow Tai Fook continued to be the chief partner of the second JNA Award. Microfilm marketing has brought unexpected effects to the spread of jewelry products. Tonghui Jewelry has designed "Ji Guang Yufeng" bracelet and "Fuqi Cup" jewelry sales skill competition based on abundant mountain roots. The final ended successfully. Loulan Moyu Thanksgiving Jewelry Exhibition opens. Heart-shaped jewelry has attracted attention. Wanqi Jewelry Beijing Operation Center has opened in Beijing. Adil Jewelry held a holiday-themed jewelry ordering meeting in Shenzhen. Disclaimer This article only represents the author's own views. Jintou Jewelry Website is neutral to the statements and opinions in this article, and does not provide any express or implied guarantee for the accuracy, reliability or completeness of the content. Please take full responsibility for readers' reference only.