Among all kinds of certificates currently on the market, the most reliable ones are as follows:
A. certificate of national jewelry and jade quality supervision and inspection center.
B.GIA certificate (American Gemological Institute).
C.HRD certificate (Belgian Diamond High Council)
D.IGI certificate (World Gemological Society)
E.GL certificate (European Gemological Institute)
The first two are the most common certificates.
GIA and State Inspection are the most popular diamond certificates in China. The national inspection certificate is the quality inspection certificate of diamonds by China's jewelry quality inspection department, which is only used in China, while the GIA certificate is recognized all over the world, and it generally needs national inspection to be sold domestically. GIA is for reference only. GIA comes from Gemological Institute of the United States, and it only has credibility in the industry, and does not represent national certification. Therefore, it is enough to have a national inspection, and so are other industries. Just because you meet the inspection of the United States or the European Union does not mean that you meet the inspection of China, and vice versa. Every country has different regulations!
Why is there a national inspection? Because the GIA certificate also requires costs, such as the clarity VVS 1, the national inspection certificate of 54-point rough diamonds in H color only costs 6500 per grain, while the GIA international certificate may cost 14400 per grain. In fact, the national inspection is sometimes stricter than GIA, and it is also a kind of test, so don't be too superstitious about foreigners, but sometimes when it is popular in the world, it must also follow the so-called international standards, that is, developed. But as far as most married people are concerned, it is no problem to match the diamond ring with the national inspection certificate!