Diamonds

For more than 50 years, fine jewellers everywhere have considered the GIA Diamond Grading Report the premier credential of a diamond’s authenticity and quality.
  • GIA Diamond Grading Report

    The GIA Diamond Grading Report includes an assessment of a diamond’s 4C’s – colour, clarity, cut, and carat weight – along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond’s proportions. For standard round brilliant cut diamonds falling in the D-to-Z colour range, the report also includes a GIA Cut grade.

    The GIA laboratory issues diamond grading reports for loose, natural diamonds in the D-to-Z colour range that weigh 0.15 carats or more. GIA Diamond Grading Reports are not issued for synthetics, simulants, mounted diamonds or those that have undergone unstable treatments, such as fracture filling or coating. And while reports may be issued for diamonds that have been laser drilled or HPHT processed, these stable treatments are prominently disclosed on the report.

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    Fees for Services
  • GIA Diamond Dossier®

    The GIA Diamond Dossier offers the same grading information as the GIA Diamond Grading Report but without the plotted diagram. As an added security feature, the Dossier service includes a microscopic laser inscription of the report number on the diamond’s girdle.

    The GIA laboratory issues the Diamond Dossier for loose, natural diamonds between 0.15 and 1.99 carats, in the D-to-Z colour range. The Diamond Dossier is not issued for synthetics, simulants, mounted diamonds, diamonds that have undergone unstable treatments such as fracture filling or coating, or those that have been HPHT processed. Any evidence of other treatment is prominently disclosed in the report.

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    Fees for Services
  • GIA Diamond eReport

    The GIA Diamond eReport, a digital-only report, provides the same impartial and exacting grading results you’ll find on other GIA reports. The report includes a graphic representation of the diamond’s proportions, and the added feature of a detailed face up image of the diamond captured during the grading process.

    Paperless and therefore environmentally friendly, the GIA Diamond eReport is accessible online via Report Check, GIA’s secure web-based report database, making the report always accessible and shareable. This service is available for natural, untreated diamonds in the D-to-Z colour range that weigh from 0.15 to 2.99 carats.

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    Fees for Services
  • Diamond Focus™ Report

    Online report only. The GIA Diamond Focus™ Report is a cost-effective grading report delivering key grading information in a digital format for select natural D-to-Z diamonds.

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    Fees for Services
  • GIA Colored Diamond Grading Report

    The GIA Colored Diamond Grading Report provides a full quality assessment of a coloured diamond including the coloured diamond colour grade, colour origin (natural or treated, such as HPHT processed or artificially irradiated), carat weight, clarity, and a plotted diagram of its clarity characteristics. As an optional service, a full colour image of the diamond may also be included.

    Unlike GIA’s D-to-Z color grading system, which is based on the relative absence of colour, coloured diamond colour grading is based on the presence of colour. Using a controlled viewing and lighting environment and a comprehensive set of colour comparators, trained graders consistently determine the characteristic colour of a diamond and assign a colour grade (“pink,” for example). 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 combined effect of tone and saturation.

    The laboratory issues this report on loose, natural coloured diamonds weighing 0.15 carats or more. The GIA Colored Diamond Grading Report is not issued for synthetics, simulants, mounted diamonds or those that have undergone unstable treatments, such as fracture-filling or coating. Any evidence of other treatment is prominently disclosed in the report.

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    Fees for Services
  • GIA Colored Diamond Identification and Origin Report

    The GIA Colored Diamond Identification and Origin Report describe the colour grade of a coloured diamond as well as its origin of colour (natural or treated, such as HPHT processed or artificially irradiated). As an optional service, a full colour image of the diamond may also be included.

    Both mounted and loose natural coloured diamonds of any size can be submitted for this report service. The GIA Colored Diamond Identification and Origin Report is not issued for synthetics, simulants, or diamonds that have undergone unstable treatments, such as fracture-filled or coated diamonds. Any evidence of other treatment is prominently disclosed in the report

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    Fees for Services
  • GIA Synthetic Diamond Grading Report (Service effective from 1st February, 2017)

    The GIA Synthetic Diamond Grading Report offers the same information as the GIA Diamond Grading Report for natural D-to-Z diamonds, using a more general description of color and clarity. GIA Synthetic Diamond Grading Reports are not issued for simulants, mounted synthetic diamonds or those that have undergone unstable treatments, such as fracture filling or coating.

    Submission Criteria

    •  0.15 ct to 3.99 ct
    •  Loose
    •  D-to-Z synthetic diamonds (separately packaged; not to be mixed in a parcel of diamonds with natural colour origin)

    Service Criteria

    "Since the Colored Diamond Grading Report service is not performed in India, if an item submitted for the Synthetic Diamond Grading Report is determined to be colored, the diamond will be returned to the client ungraded with zero fee."

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    Fees for Services
In addition to diamond reports, we offer a suite of additional services to meet your diamond needs:
  • Laser Inscription

    Microscopically inscribe a personal message, symbols, logos, or your diamond’s unique GIA report number on its girdle. Laser inscription allows you to personalize, brand or easily identify your diamond.

    Laser inscription of the GIA report number is included with the Diamond Dossier® and all Synthetic Diamond Reports.

    Fees for Services
  • Diamond Type Analysis

    GIA will determine your diamond’s type (Ia, Ib, IIa, or IIb) and contact you with the results. You may also request a letter and photograph of the diamond with your analysis. Supplemental to a GIA diamond report.

    Fees for Services
  • Quality Assurance Service

    With an increase in treated and synthetic diamonds in the marketplace, GIA now offers testing for loose and mounted diamonds in the smaller size ranges to help you quickly make determinations about items being offered to you. Available for D-Z and colored diamonds 0.20 carats and less and black diamonds 5.00 carats and less, this service offers tests to determine:

    • Natural vs. synthetic and color treatment
    • Clarity treatment
    • Diamond type
    • Gem material
    • Surface treatment

    Results are presented in a table format.

    Rush service is available but subject to availability. Rush service results are returned within 48 hours (excluding weekends and holidays) or rush fee is not charged.

    Fees for Services
  • Sealing

    Seal your diamond and its key grading details in a secure, tamper-resistant package at the completion of the grading process.

    Available for loose D-to-Z and colored diamonds accompanied by a GIA report. Depending on the dimensions of the diamond, it may not be possible to seal items over 8.00 carats.

    Fees for Services
  • Melee Analysis Service

    Separates natural, untreated diamonds from simulants and potentially synthetic or treated diamonds, and sorts the screened diamonds by color range. Clients may specify a size range for their submission. Diamonds that fall outside of the service criteria will be charged a standard fee.

    Submission Criteria

    • Round D-to-Z diamonds
    • 0.9 to 4.0 mm diameter (approximately 0.005 to about 0.25 carats)
    • 500 diamond minimum per submission

    Fees for Services
  • Master Color Comparison Grading

    Submit diamonds for color analysis and to be assembled into a master diamond set for D-to-Z color grading. Each diamond submitted must meet stringent criteria for shape, weight, proportions, conditions, and more to be included as part of a set. The set is issued a Master Diamond report listing the diamonds in the set and their color grade.

    Two set minimum. Please contact us at 760 603 4500 for important information before submitting your items for this service.

    Fees for Services
  • Same Day Service

    GIA is able to complete some diamond services by 4pm if the diamond is received by 10am on the same day. These services will vary by location, so please check availability with your local customer service representative.

    Available for D-to-Z diamonds, and colored diamonds that are not considered green, pink or blue as testing to determine the origin of these types of diamonds often takes more time than same-day service allows.

    Fees for Services
  • Re-Examination

    If your GIA-graded diamond has been re-cut, submit your diamond for a Re-Examination. The diamond will go through the grading process and a new report will be issued.

    Fees for Services
  • Report Update

    If it’s been a while since your diamond was graded and you’d like to confirm its quality, resubmit the diamond along with its original GIA report. The diamond will go through the grading process and a new report will be issued.

    Fees for Services
  • Report Conversion

    Convert your current GIA report to a different report type. Submit the diamond along with its original GIA report. The diamond will go through the grading process, and a new report will be issued.

    Fees for Services
  • Report Verification

    Confirm that your GIA report matches your loose or mounted diamond. Submit the diamond along with its GIA report. Verification results will be returned in letter format attached to your original report.

    Fees for Services
  • Recheck or Final Observation

    To confirm your diamond’s grading conclusion within 60 days of the original analysis, resubmit the diamond with its GIA report. Final Observations are not available for diamonds that were issued Dossiers or eReports.

    Fees for Services
  • Damage Assessment

    Offered as a supplement to GIA diamond reports to determine if a diamond has been damaged since its last polishing. Results are delivered in as a GIA Identification Report.

    Available for loose or mounted, D-to-Z or colored, natural diamonds.

    Fees for Services
  • Diamond Sorting (Temporarily Unavailable)

    You can provide specific colour, clarity, polish and symmetry parameters and GIA will issue grading reports for all diamonds meeting your criteria. Grading information will not be provided for any diamonds that do not meet the specified criteria and they will not be tested for treatments.

    Available for diamonds weighing between 0.15 and 1.99 carats.50 diamond minimum, submitted in bulk. Individual parcels required. Please contact GIA in advance for shipments of more than 1,000 diamonds. Not available for Diamond eReports.

    Fees for Services