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What is the difference between Mossan drill GRA and GMA?

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Gra certificate is the most authoritative.
Gra belongs to the American Gem Institute, and CNAs, CNAB and CNAL. Any of the above three marks is valid, especially the first mark CMA, which is the basic requirement of national laws for testing and inspection institutions.
At present, due to the increasingly mature market competition and consumer psychology, and in order to deal with the increasingly sophisticated means of fraud in the jewelry industry, testing and inspection institutions must constantly improve their technical level, testing ability and management means. Therefore, many testing and inspection institutions have the above three marks at the same time, and have the ability and level required by the three marks. It can be understood that the appraisal certificate with the above three marks has the “three insurances”.
GMA is an organization that has nowhere to prove its authority
Consultation record · answer on December 31, 2021 what is the difference between GRA and GMA? Gra certificate is the most authoritative. Gra belongs to the American Gem Institute, and CNAs, CNAB and CNAL. Any of the above three marks is valid, especially the first mark CMA, which is the basic requirement of national laws for testing and inspection institutions. At present, due to the increasingly mature market competition and consumer psychology, and in order to deal with the increasingly sophisticated means of fraud in the jewelry industry, testing and inspection institutions must constantly improve their technical level, testing ability and management means. Therefore, many testing and inspection institutions have the above three marks at the same time, and have the ability and level required by the three marks. It can be understood that the appraisal certificate with the above three marks has the “three insurances”. GMA is an organization that has nowhere to prove its authority. Is GMA a Mossan drill? How much is GMA per carat? Hello, GMA is an appraisal organization, not the first name of diamond: domestic mosan diamond is no worse than the so-called imported mosan diamond. 200 pieces a carat is the best. At present, 99.8% of the domestic products are made in China. A large part is exported abroad, including the United States. The largest processing base is in Wuzhou, Guangxi. Second: many people add a package to the domestic marking and say they are imported. They sell 2000 carats. It’s actually made in China. Spend the price of imports and buy domestic things. Did you say it was a hole? In fact, buying mosan diamond is always regarded as an ornament. Beautiful Flash is enough. Do not buy expensive!

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