Analysis & grading

Coloured Stone Reports & Services Details

Coloured Stone Reports

GIA coloured stone reports describe the type of gemstone, if your stone is natural or synthetic and if there are any detectable treatments. When determinable, origin will be provided for certain stones. Included in all reports is the gemstone cutting style, shape, weight, measurement and colour, and a photograph of the stone. Multiple security features on GIA coloured stone reports ensure their authenticity. Loose or mounted gemstones may be submitted for these services.
 

Coloured Stone Identification Report

The GIA Identification Report describes whether the stone is natural or synthetic, identifies the type of gemstone and includes any detectable treatments. This report also contains a detailed description of the gemstone including details such as cutting style, shape, weight, measurement and colour, and includes a photograph of the gemstone.

Submission Criteria

  • Any carat size

  • Loose or mounted

Service Restrictions
For large items, contact your Client Service Representative. Items over 50 kg are not accepted. 

Coloured Stone Identification & Origin Report

The GIA Identification & Origin Report describes whether the stone is natural or synthetic, identifies the type of gemstone along with an opinion on the geographic origin of the stone if determinable, and includes any detectable treatments. This report also contains a detailed description of the gemstone such as cutting style, shape, weight, measurement and colour, and includes a photograph of the gemstone.

If an opinion on geographic origin cannot be given, the report will be issued with the geographic origin result as “inconclusive” and the Identification Report fee will be charged based on the weight of the stone.

Submission Criteria

  • Any carat size

  • Loose or mounted

  • Available for ruby, sapphire, emerald, Paraíba type tourmaline, red spinel and alexandrite only
     

Service Restrictions
For large items, contact your Client Service Representative.

Add-On Services

GIA Add-On Services give you further information or security for your gemstone. Must accompany a Report Service or Follow-Up Service. Certain services can be expedited for an additional fee; exceptions will apply.
 

Express Service

Expedite the service time of the Identification Report service for loose or mounted gemstones. Turnaround time is 48 hours (excluding weekends and holidays). Express Service for Identification and Origin services can be expedited to 72 hours. By appointment only.

Service Restrictions
Not available for Quality Assurance, Coloured Stone Sorting or On-Site Consultancy Services. Certain services or large submissions may require a longer turnaround service time, contact your Client Services Representative for details.

Laser Inscription

Personalise, brand or easily identify your gemstone. Microscopically inscribe a personal message, symbol, logo or your gemstone’s unique GIA report number on its girdle.

Submission Criteria

  • Rubies and sapphires only

  • 0.50 carats or larger

  • Faceted

  • Loose 

Service Restrictions
Not available with Report Verification service.

Damage assessment

The Damage Assessment service is offered as a supplement to GIA identification reports to determine if a gemstone has been damaged since its last polishing. Results of the damage assessment are delivered in letter format.

Submission Criteria

  • Loose or mounted gemstones

Follow-Up Services

Verify, re-evaluate or update results from your original GIA Report with GIA Follow-Up Services.
 

Re-check And Final Observation

Request a reassessment of the colour, treatment, identification, geographic origin, weight, shape, cutting style or measurements (dimensions) of your gemstone.

Submission Criteria

  • Loose or mounted gemstones

  • Gemstone must be submitted along with its original GIA report


Service Restrictions
Service must be requested within 60 days of original report date. If requested after 60 days, an Update service must be performed prior to the Recheck or Final Observation.

Update

To confirm your gemstone’s identification results or if the gemstone has been re-cut, resubmit the gemstone along with its original GIA report. The gemstone will go through the identification process and a new report will be issued. The old report will not be returned. The Update service can accompany Add-On services where a re-evaluation of the gemstone is required prior to performing the Add-On service.

Submission Criteria

  • Loose or mounted gemstones

  • Gemstone must be submitted along with its original GIA report

Report Conversion

Convert your Identification Report into an Identification & Origin Report or vice versa.

Submission Criteria

  • Loose or mounted

  • Emerald, ruby, sapphire, Paraíba type tourmaline, red spinel and alexandrite

To convert from Identification to Identification & Origin Report, gemstone and original GIA report must be submitted. For conversion from Identification & Origin to Identification Report, only the original GIA report must be submitted.

Report Verification

Confirm that your GIA report matches your gemstone. Verification results will be returned in letter format, attached to your original report.

Submission Criteria

  • Loose or mounted gemstones

  • Gemstone must be submitted along with its original GIA report


Service Restrictions
Inscription not available with Report Verification service.

Specialty Services

GIA Speciality Services offer further analysis and information on your noteworthy gemstone. Services are customised with in-depth information specific to your gemstone. Various levels of service are available depending on your needs.
 

Monograph

The GIA Monograph is a customised gemmological report designed to showcase and celebrate exceptional gemstones. Each monograph comes complete with photographs, detailed identification information, spectroscopic analysis, historical background and other supporting content. The monograph tells the complete story of the gemstone and is presented within a handmade box inscribed with the gemstone’s name. A USB drive is included that contains a digital copy of the diamond’s story.

Submission Criteria

  • Only available for qualifying gemstones

  • Must accompany a Report Service

Please call your Client Services Representative for details or contact us.

Portrait Report

Packaged in a hard-bound portfolio, the GIA Portrait Report sets out all the data that supports the conclusions reached in an Identification or Identification & Origin Report.

Submission Criteria

  • Must accompany a Report Service

Please call your Client Services Representative for details or contact us.

Notable Letter

The Notable Letter accompanies a GIA report and details the attributes of especially noteworthy or unique gemstones. The letter includes a face-up photo and comments on the gemmological properties such as colour, size and clarity that make the gemstone unique.

Submission Criteria

  • Only available for qualifying gemstones

  • Must accompany a Report Service

Please call your Client Services Representative for details or contact us.

Batch Services

GIA Batch Services utilise GIA-developed technology to analyse and sort gems based on varying test types. The minimum submission quantities vary by service.
 

Coloured Stone Sorting

Evaluates gemstones and sorts them based on pre-specified test categories. Gemstones that pass receive an Identification or Identification and Origin Report depending on the client’s request and are charged accordingly. Gemstones that do not pass the test criteria are returned without a report and charged a nominal fee. Tests available will vary depending on stone type.

Tests Available

  • Clarity Enhancement

  • Colour Designation (Padparadscha*, Pigeon’s Blood, Royal Blue)

  • Heat treatment

  • Impregnation

  • Lead Glass Filling

  • Level of Clarity Enhancement (emerald only)

  • Natural or Synthetic

  • Presence of Copper

  • Residue from Heating

  • Titanium (Ti) Testing

*Testing for beryllium and heat treatment will be performed if required and charged accordingly.

Submission Criteria

  • Loose

  • Items submitted must be of the same material

  • Up to two test criteria may be requested at time of submission

Tests available will vary depending on gemstone type.

Quality Assurance

Identifies and provides results based on specified test criteria for gemstones. Results are presented in a table format. No identification information is included on the report.

Tests available 

  • Beryllium (Be) testing (ruby and sapphire only)

  • Burma or non-Burma origin (ruby only)

  • Clarity Enhancement

  • Colour designation (Padparadscha*, Pigeon’s Blood, Royal Blue)

  • Heat treatment

  • Impregnation

  • Lead glass filling

  • Level of clarity enhancement (emerald only)

  • Natural or synthetic

  • Presence of copper

  • Presence of dye

  • Residue from heating

  • Surface treatment

  • Titanium (Ti) testing

*Testing for beryllium and heat treatment will be performed if required and charged accordingly.

Submission Criteria

  • Loose or mounted

  • Items submitted must be of the same material

  • Up to two test criteria may be requested at time of submission

Tests available will vary depending on gemstone type.

Service Restrictions
Not available for gemstones that have already received an Identification or Identification & Origin Report.

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