It is also important to purchase a certificate when purchasing diamonds. Only by selecting a certificate with high credibility can you ensure that the diamond is purchased with confidence. The certificates that most domestic consumers can see are the internationally common IGI and GIA, as well as the domestic national inspection diamond certificate.
GIA certificate
GIA is the abbreviation of Gemological Institute of America. Gemological Institute of America is a non-profit gemological education research institute. Since its founding in 1931, the world-renowned GIA scientists, researchers, gemologists and lecturers are recognized by the jewelry industry as diamond grading. And the highest authority for gem identification.
GIA is the founder of Diamond 4C, and the accreditation bodies of all countries in the world use the GIA standard as a reference. The GIA certificate is the most costly of all certificates and has a long production cycle. The GIA certificate has two certificates, the difference is that the small certificate does not have a diamond ç‘•ç–µ detailed chart. But in general, the certificate will list the diamond-related knowledge very carefully. All the information that can be found online can be seen on this certificate.
IGI certificate
IGI is the international gemological institute of Belgium. It has organizations in diamond centers around the world. The International Gemological Institute currently has more than 250 professionals. New York, Bangkok, Mumbai or Tokyo can see their unique professional standards, IGI. More than a dozen branches are located all over the world and operate much faster than GIA.
Each year, IGI has issued more than 400,000 identification and evaluation reports, and its source will be detailed on the cover of the book. IGI's certificate styles are many, there are large and small certificates, as well as card, plastic, credit card and other certificates, these can meet different needs. The detailed information on the certificate will be available. In particular, the cut is the most elaborate. The famous "Eight Arrows and Eight Hearts Diamond Certificate" is its exclusive patent. It can be said that its requirements for diamond cutting have reached the limit.
National Inspection Diamond Certificate
The National Inspection Diamond Certificate is valid only in China. The National Jewelry Quality Supervision and Inspection Center is a national-level jewelry and jade professional quality inspection authority authorized by the relevant state authorities. It is the authority of Chinese jewelry and jade detection. The domestic identification standard is based on the GIA diamond identification standard, but there is reservation about the rating of the national diamond relative to the GIA diamond. It is normal for the general color and clarity to have a discrepancy. GIA is a loose diamond grading certificate, while the national inspection is generally a diamond grading certificate.
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