Diamond Certificates

Potential diamond buyers should always check to ensure they will receive a diamond grading certificate with their diamond purchase. The importance of this certificate is to give buyers a detailed gemological analysis of the gemstone, compiled by a team of certified gemologists in a laboratory.

The information you’ll find in your diamond grading certificate will be the 4 C’s; color, clarity, carat and cut. The dimensions and shape of the diamond will be presented in detail within the report, as well as the measurements, table and depth percentages and the polish and symmetry inherent within the stone. Your report should also contain a comprehensive section on any imperfections, fluorescence and graining within the stone and come complete with a detailed sketch of your diamond.

A certificate is an essential part of any diamond purchase and will ensure the buyer of both the quality and authenticity of the gemstone. Additionally, if you ever decide to resell your stone the certificate will allow you to receive a fair price. If you plan on insuring your diamond, a grading report is often a prerequisite. Most labs charge a relatively modest fee to undertake the certification process, and the price is based on carat weight.

While a certificate doesn’t necessarily enhance the value of your diamond, it’s an important essential when purchasing a diamond to procure a grading report. With a certificate, your diamond can never be undervalued or suspected of being inauthentic. If you’re interested in purchasing a diamond, make sure you receive a diamond grading report from one of the leading independent gemological labs to ensure your gem’s authenticity and protect your investment.

The Gemological Institute of America (GIA) was actually the first group to develop an internationally accepted grading system. Even prior to the EGL, GIA was the first to introduce a diamond grading report and set the standards for diamond grading worldwide. The company compiles reports on diamonds over 1 carat in size. What’s more, they are the group responsible for examining some of the world’s most famous gems. Each diamond screened with GIA comes with a complete report detailing the weight, cut, proportions, color grade and clarity.

The European Gemological Society (EGL) has really been the defining group in setting the standards and criteria for diamond grading. Their Diamond Certificate and Diamond Consultation offers diamond buyers a detailed report on the various aspects of the grading process. Their certificates are recognized worldwide and their client base includes craftsmen, wholesalers, dealers and manufacturers. However, the EGL does not sell diamonds and works independently from any diamond sales groups.

The American Gemological Society (AGS) serves a wide variety of clients including jewelry wholesalers, diamond cutters, jewelers, and various manufacturers. Their grading report, referred to as the AGS Diamond Quality Document (DQD) offers a comprehensive report on the cut grade of round, brilliant cut diamonds. In addition their report covers all four aspects of the grading process including cut, clarity, color and carat weight. Their ratings are given on a scale from 1 to 10.

The International Gemological Institute (IGI) issues over 400,000 grading reports each year and their reports encompass three distinct areas including the Diamond Report, Identification Report, and the Information Appraisal Report. The diamond report helps ensure the diamond’s authenticity by providing information about weight, measurements, shape and cut, clarity, color and several other aspects of the gemstone. The identification report provides an enlarged photograph of the diamond to substantiate the information about proportions, measurements and the 4 C’s. Finally, the Appraisal report gives an estimate about the diamond’s replacement value expressly for insurance purposes

  • EGL Certificate
    • The EGL (European Gemological Society) has really been the defining group in setting the standards and criteria for diamond grading. The society was founded by Guy Margel, who opened the first of the EGL’s laboratories in Antwerp, Belgium in 1973. Two laboratories were opened in the following years in Los Angeles and New York, and in the ensuing years they have been followed by sites virtually all over the globe.

      Their Diamond Certificate and Diamond Consultation offers diamond buyers a detailed report on the various aspects of the grading process. Their certificates are recognized worldwide and their client base includes craftsmen, wholesalers, dealers and manufacturers. However, the EGL does not sell diamonds and works independently from any diamond sales groups. The EGL has been a leader in the area of education also. EGL recognized that although investing in certified diamonds was becoming very popular, most people had little knowledge of grading criteria, and had trouble even reading the grading certificates. To counter this problem, the EGL began the EGL College of Gemology in 1983. The Mission Statement of the EGL sums up their main purpose by saying they exist to take the guess work out of diamond buying, and to provide ongoing education.

      The organization is dedicated to setting and maintaining International standards in diamond grading. The EGL recognizes that the grading of diamonds is not an exact science. Rather, it is considered an art form and an applied science, and relies very heavily on the education and training of the gemologist and a set of standards that are applied in a universal way.

  • GIA Certificate
    • The Gemological Institute of America was actually the first group to develop an internationally accepted grading system. GIA is the creator of what is known as the 4C’s of diamond grading, (color, clarity, cut and carat weight). Even prior to the EGL, GIA was the first to introduce a diamond grading report and set the standards for diamond grading worldwide.

      The company compiles reports on diamonds over 1 carat in size. Each diamond screened with GIA comes with a complete report detailing the weight, cut, proportions, color grade and clarity. The real cores of the GIA’s activities are in the area of education. The Institute is the home of the very prestigious GG degree, (Graduate Gemologist) and those two letters following an individual’s name marks him as a top professional in the jewelry world.

      The Institute produces two credentials that are known and respected worldwide. The first is the GIA Diamond Grading Report and the second is the GIA Diamond Dossier. Diamonds are sent from all over the world to the Institute to be graded. What’s more, they are the group responsible for examining some of the world’s most famous gems. Among the well known gems that have been handled by the Institute are the Hope Diamond, the Steinmetz Pink, The Taylor-Burton Diamond, and the Incomparable Diamond that weighed out at an incredible 407.48 carats. Such is the reputation of the GIA that the White House and Congress have sought its services. Its publications are the bibles of the gem industry, and it houses the largest library of books related to diamonds and gems in the world.

      The GIA is a non-profit organization, and was founded in 1931, giving it 75 years of serving as the leader in the diamond grading field.

  • IGI Certificate
    • The International Gemological Institute is located in Antwerp, New York, Hong Kong, Mumbai, Bangkok, Tokyo, Dubai, Toronto, Los Angeles, and Cavalese. It employs over 450 gemological experts.

      IGI issues over a million grading reports each year and their reports encompass three distinct areas including the Diamond Report, Identification Report, and the Information Appraisal Report. The Diamond Report helps ensure the diamond’s authenticity by providing information about weight, measurements, shape and cut, clarity, color and several other aspects of the gemstone. Each diamond is inspected by several gemologists who use top notch equipment to make their reports. Consumers might be familiar with these reports as the "credit card" version often appears alongside diamonds in jewelry stores. Upon request, IGI can also seal the diamond with a miniature copy of the diamond report in order to ensure that the diamond matches the diamond report.

      The Identification Report provides an enlarged photograph of the diamond to substantiate the information about proportions, measurements and the 4 C’s. This report can also be done if the diamond is already placed in a setting. Finally, the Appraisal Report gives an estimate about the diamond’s replacement value expressly for insurance purposes.

      IGI believes strongly in their mission because they are aware that the average consumer is much more educated about the 4C's than in previous generations. Most consumers expect to receive a report such as the ones that IGI produces when they purchase their diamonds. IGI calls their reports a "passport" because it travels with the diamond. IGI also offers consumers the option of registering their diamond online to assist in recovery if lost or stolen.

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