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5 thoughts on “wholesale wooden jewelry displays Is there a certificate when buying diamonds? What certificate is more authoritative?”
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turkish silver jewelry wholesale To buy diamonds in formal channels, there must be a certificate, because the pricing of diamonds is based on the inspection and inspection of professional institutions, and this information should be displayed on the certificate.
The professional diamond certificate with the highest recognition in the world is the GIA certificate, that is, the Institute of American certificate.
The expansion information:
The 4C classification standards measured diamond quality:
1, cact weight: diamond weight. Carat is a diamond weight unit, which is called "Clar" in Chinese. 1 gram = 5 carats, 1 carat = 100 points. GIA calculates 2 digits after the decimal point, and the third place is 9 to one, such as 32.89 calculated 32 points, 32.9 calculated 33 points; from the perspective of investment, the value of more than 1 carat has anti -inflation and stable appreciation value.
2, color grade: diamond color. Gem -grade white diamonds start from D color to Z color. G is the color of the drill.
3, Clarity Grade: Diamond clarity. That is, how much the connotation of diamonds under the large mirror. VVS2 is the net degree of drill. GIA divides diamond clarity into FL, IF, VVS1-VVS2, VS1-VS2, SI1-SI2, I1-I2-I3 and other levels. files.
4, Cut Grade: Diamond cutting is a comprehensive measure of many indicators, including symmetry and polishing. Excellent is cut.
Reference materials:
Baidu Encyclopedia-GIA certificate
jewelry box china wholesale Office workers in senior jewelry retail industry come to answer your questions.
Are all diamonds have certificates?
No, some carats with small diamonds are generally less than 30 points, and there will be no diamond certificate. At least our store is like this. Of course, some small diamonds will be equipped with diamond certificates.
What certificate is more authoritative?
The type of diamond certificate will not be repeated. Before adding it, we need to understand why the diamond certificate is needed. The diamond certificate is a guarantee for everyone. Can help everyone identify the authenticity of diamonds, whether it is natural. In the process of selection, everyone can understand the quality of diamonds through the certificate comprehensive and in -depth, and then choose the favorite diamond.
Therefore, I think the accuracy of the diamond certificate is the most important! Everyone knows that most of the certificates are manually rated, and the disadvantages are obvious, and there may be inevitable errors. Recently learned the full automatic 4C certificate of Israel SARINE Diamond Technology Company. First of all, their home has the world's first automated artificial intelligence diamond laboratory. The 4C rating is fully automated. That is to say, no matter how many diamonds are tested, the rating results are the same, which effectively avoids the error of artificial rating.
Is my answer can help you.
metal stamping jewelry supplies wholesale Pay content for time limit to check for freenAnswer we are usually attached to the diamonds.nSome common national inspection diamond certificates: NGTC (National Jewelry and Jade Quality Supervision and Inspection Center) GIC (China University of Geosciences (Wuhan) Jewelry College) NHQSIC (National Jewelry Quality Supervision and Inspection Center)nFor consumers, when buying diamonds, as long as there are three authoritative recognition signs on the National Inspection Certificate, it is more reliable:nIf the national inspection certificate of the purchased diamond has the above qualifications, it means that this certificate is relatively rigorous.nSuch as thisnMore 8nBleak
wholesale jewelry supplies atlanta ga First of all, whether it is the national standard certificate or the GIA certificate, as long as it is a regular place when buying diamonds, there must be a certificate. Looking at the GIA certificate, only the China National standard certificate is valid, and GIA is relatively professional and comprehensive.
Third, the landlord still has to find a regular store to buy diamonds. Although some private shops are cheap, it may be a second -hand diamond, which is the diamond ring sold by others.
In general, diamonds above 30 points are the same as the diamond ID card with the GIA certificate, and it is the authority of global recognition.
wholesale photo jewelry All the diamonds sold must have a certificate, the most recognized is the GIA and IGI certificates