A diamond grading report describes the characteristics of an unmounted diamond or gemstone. Before they established the current grading system, sellers used a variety of methods to grade diamonds. However, these methods were very subjective and led to inconsistencies on a global level.
Where it started
In 1931, the non-profit organisation, the Gemological Institute of America, known as the GIA, was founded by Robert M. Shipley. His mission was to regain public trust in the jewellery industry by upholding the highest integrity, academics, science, and professionalism through education, research, laboratory services, and instrument development. In the 1940s, Shipley began informally teaching about the 4 Cs, and in 1953 created the GIA grading system. GIA produced the first diamond grading report in 1955. Shipley collaborated with De Beers, the world’s leading diamond company and the largest producer and marketer of gem diamonds by value globally, and De Beers would use the 4 Cs in their advertising and marketing campaigns to help educate the public.
Where we are now
Subsequently, other grading laboratories have started, such as the European Gemological Laboratory, American Gem Society Certification, IGI (International Gemological Institute), HRD (Hoger Raad Voor Diamant Antwerp), and DIA (International Diamond Certification Laboratory), amongst many others. It is essential for each diamond or gemstone to have a report. This report contains an objective grading on the diamond or gemstone shape, colour, clarity, cut, carat weight, proportions, and finish. It also identifies any known treatments. Many reports also include a diagram of the inclusions that can affect how the light displays in a diamond. While people can forge the certificate, the actual database’s information cannot be. Therefore when you buy a diamond with an accompanying certificate, you can buy with confidence, knowing that you are getting what you are paying for. In addition, a diamond grading report can be a document of identification in the event of loss or theft.
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