The service is offered for D-to-Z diamonds that carry a GIA Diamond Grading Report or a GIA Diamond Dossier®, and colored diamonds holding a GIA Colored Diamond Grading Report.
The new service seals the diamond with its key grading information in a credit card-sized, tamper-resistant package. The sealed package keeps the stone, its report number and its primary gemological details such as report date, shape and the Four Cs, together in a secure, easy-to-display packet.


The sealed package contains multiple security features, including the GIA hologram. The packet shows that the diamond has been graded by GIA and the information in it matches the stone, which will help prevent attempts to misrepresent the item and its report.

Fine jewellers and auction houses consider the GIA Diamond Grading Report to be the world's premier gemmological credential. The Institute uses the most advanced technology available to assess, to the fullest possible extent, the authenticity and quality of your diamond. A GIA Diamond Grading Report is issued for diamonds of all shapes and sizes that fall within the D-to-Z colour grading scale, and provides the most comprehensive analysis of a diamond’s quality. A GIA Diamond Grading Report includes the Institute’s authoritative assessment of a diamond’s 4Cs – colour, clarity, cut and carat weight – along with a diagram of your diamond’s clarity characteristics.

The GIA Laboratory issues Diamond Grading Reports for loose, natural diamonds. GIA Diamond Grading Reports are not issued for synthetics, simulants, mounted diamonds or diamonds that have undergone treatments that are considered unstable, such as fracture filling or coating. And while Diamond Grading Reports may be issued for diamonds that have been laser drilled or HPHT processed, these stable treatments are prominently disclosed on the report.

For a detailed look at a GIA Diamond Grading Report, click here.

To view a PDF of a GIA Diamond Grading Report, click here.

The GIA Diamond Dossier is a grading report issued for diamonds within the GIA D-to-Z colour grading scale that weigh less than 1.99 carat, but more than 0.15 carat. The Dossier includes GIA’s authoritative analysis of a diamond’s 4Cs – colour, clarity, cut, and carat weight. As an added security benefit, the Dossier service includes a microscopic laser inscription of the Dossier’s identification number on the girdle of the diamond, connecting the diamond and the report together.

The GIA Laboratory issues the Diamond Dossier for loose, natural diamonds. Diamond Dossier is not issued for synthetics, simulants, mounted diamonds, diamonds that have undergone treatments that are considered unstable such as fracture filling or coating or diamonds that have been HPHT processed. Any evidence of other treatment is prominently disclosed on the report.

For a detailed look at a GIA Diamond Dossier, click here.

GIA’s D-to-Z colour grading system for colourless to light yellow diamonds, is based on the relative absence of colour. However, the grading system for a coloured diamond is based on the presence of colour. Using a controlled viewing and lighting environment and an elaborate set of colour comparators, trained graders can consistently locate the characteristic colour of a diamond and assign it a grade. The hue chosen is modified by a "Fancy-grade" term, such as Fancy Light, Fancy, Fancy Intense, Fancy Deep, Fancy Vivid or Fancy Dark, which describes the range of the combined effect of tone and saturation. Once a colour grade is established, the diamond is graded for clarity. As an optional service, a full colour image of the diamond may also be included.
The GIA Colored Diamond Grading Report contains all the same grading information as the GIA Diamond Grading Report (without a cut grade). This service is provided only for loose, natural diamonds, and may be provided for those that have been artificially irradiated, laser drilled or HPHT processed. These treatments are prominently disclosed on the report. The GIA Colored Diamond Grading Report is not issued for synthetics, simulants, mounted diamonds or diamonds with non-stable treatments such as fracture-filled or coated diamonds.

Both mounted and loose diamonds can be submitted for this service, which determines the nature of a diamond’s colour, as well as its colour grade. Using a controlled viewing and lighting environment and an elaborate set of colour comparators, trained graders can consistently locate the characteristic colour of a diamond and assign it a grade. The hue chosen is modified by a “Fancy-grade” term, such as Fancy Light, Fancy, Fancy Intense, Fancy Deep, Fancy Vivid or Fancy Dark, which describes the range of the combined effect of tone and saturation. A clarity grade is not included with this report. As an optional service, a full colour image of the diamond may also be included.

In addition to its Diamond Grading Reports, GIA also provides Gemological Identification Reports for mounted or loose gems. These reports include the identification of the gem material, and any evidence of treatments detected in the process. For loose gemstones, measurements and weight will also be provided.

At your request, a diamond may be microscopically inscribed on its girdle with its unique GIA Report Number (referred to as the GIA Inscription Registry), a personal message, or other text, symbols or logos. The GIA Inscription Registry is included in the Diamond Dossier® service. An inscription allows for easy identification of a diamond, a way to personalize the diamond, or serves as a form of branding for the diamond manufacturer or retailer.

This free online service allows you to check the information contained in a GIA Diamond Grading Report and GIA Diamond Dossier®. Just enter the diamond’s report number and carat weight, Report Check returns all the grading information – including a cut grade when available – that was issued for that diamond. Report Check currently serves only those diamonds that were graded from January 1, 2000 to the present.

To access report check, click here.

This free online service allows you to estimate a cut grade for any round brilliant cut diamond, simply by entering the diamond’s proportion and finish information.

To learn more about Facet ware, click here.

If you would like to confirm the authenticity of your GIA Diamond Grading Report or Diamond Dossier®, or the information your report contains, you can request a report verification. Simply submit your diamond along with its original report to the GIA Laboratory. The diamond will be re-assessed and the results of the new analysis will be returned to you, along with your diamond and its original report.

Anyone can submit gemstones to GIA for report verification. Although we attempt to perform this service even when diamonds are mounted, in some instances we may have to ask to have the diamond removed from the setting so our gemmologists are able to properly perform the verification service. Please note that the results will be returned to you by letter, along with your diamond and its original report.

For more information about this service, please contact GIA Laboratory Customer Service at: Email : support.giaindia@gia.edu