Other Major Overseas Labs That's why there are strong well-regarded diamond grading labs around the world that serve local markets. CGL, Central Gem Laboratories, is a well-respected gem laboratory in Japan with seven locations founded in 1970. It's the leading lab in the Japanese market.
What is CGL diamond certification?
The lab's mission is to take the guesswork out of buying diamonds or a precious stone. The diamond certificate records all the relevant information pertaining to the diamond, including carat weight, color grade, clarity grade, measurements and physical properties as well as plotting diagrams. ...
What is IGL diamond certification?
The internationally recognized IGL International Diamond Report (established in 1974) is your diamond's DNA. It independently certifies your diamond's carat weight, clarity, color grading, cut and other vital details. IGL certified diamonds are also laser-inscribed with their certificate number.
How do you get a diamond certificate?
The most convenient way to obtain a GIA Diamond Grading Report, Diamond Origin Report, Diamond Dossier® or Diamond Focus™ Report is through a local fine jewelry retailer. Retail jewelers are uniquely qualified to obtain a GIA report and to explain its contents.
How long does it take to get a diamond GIA certified?
For D-to-Z color diamonds and some colored diamonds, service can be completed same day if the item is received by 10 a.m. For colored stones and pearl services, the identification report can be completed 48-72 hours from when the item was received but can be dependent on the gemstone type.
How does GIA certify diamonds?
GIA Diamond Reports take four main factors into consideration: Cut, clarity, color, and carat weight. In fact, according to the GIA, “grading” is a more accurate term than “certification” to describe the process. ... Color and clarity are ranked on a scale, while carat weight is literally based on the diamond's weight.
What is the most reputable diamond certification?
- GIA, AGS, and GCAL are the best labs.
- GIA is the most well-known, well-respected diamond grading laboratory.
Who can certify a diamond?
GIA Certified Diamonds The Gemological Institute of America is the foremost authority on diamonds. In addition to their certification process, this organization is also known for creating the “4 C's” of diamonds that is widely recognized as the important features to consider before purchase.
Does GIA certify small diamonds?
However, GIA does offer special testing for loose and mounted diamonds in smaller sizes. Testing for diamonds less than . 2 carats can determine whether your small diamonds are natural and whether they've been treated.2019-06-04
What is GIS diamond certification?
GIS (Gemological Institute & Systems) is an organization that exists to give Gemstone Identification, Diamond Grading and Jewelry Quality Analysis Report to Professionals just as to the buyers. ... This is the manner in which the organization has, cut a specialty for itself in the business.
What does diamond Certificate mean?
Diamond certification is a system created by the Gemological Institute of America (GIA) to evaluate the quality of a diamond based on the 4Cs—carat, color, clarity, and cut. Diamond certification is also referred to as diamond grading and it is highly recommended that couples only buy certified diamonds.2021-02-18