Reports & Services - World Gemological Institute
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Reports & Services

Diamond Grading Report

360° Video Diamond & Gemstone Certificate

Jewellery Grading Report

Gemstone Identification Report

Pearl Grading Report

Natural vs. Synthetic Verification

Fourier Transform Infrared Spectroscopy (FT-IR System)

Verbal Pre-Grade / Evaluation

Professional Photography

Security Seal

Laser Inscription


WGI Gemmological Reports intend to describe the characteristics of the article submitted for analysis to the laboratory but also give a valuable and useful tool to the jewellery Industry. The Reports, with their unique online report verification number, may contain results of loose or mounted diamonds or gemstones, features and characteristics of eventual precious metals present in the article analysed.


A diamond report covers the four C’s: cut, colour, clarity, and carat weight. Your diamond report will include an in-depth measurement of the proportions of your diamond, along with a detailed mapping of the inclusions which will give you a complete visual of the internal characteristics, which is useful for identification purposes.

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The 360° Video Reports present a unique feature in gemological certificates, giving our customers the possibility to access the 360° video and pictures of the stone by scanning the QR code on the bottom. This feature will help our clients sell faster the diamond or gemstone. The 360° video is made on request.


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The Jewellery Report, with a full-colour image, provide a detailed description of the item like metal identification, gemstone or diamond grading and potential treatments. It is also possible to include origin opinion of the gemstone (if applicable) and price evaluation. This is a valuable service for retailers and private as the jewellery piece has been certified by an independent organisation.

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Gemstone Identification Reports are requested for standard identification and verification of diamonds and colored stones. This report Includes; the species of the material, detailed measurements, quality, weight as well as a detailed photograph of the gemstone.

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Pearls are unique and have a completely different set of grading parameters, compared to a diamond or coloured stone. Details that are only specific to pearls, such as: lustre, overtone and surface characteristics are the key points which influence the value of pearls.



Determining a natural gemstone that has been created by Mother Nature or a synthetic stone that has been created in a lab is becoming increasingly difficult and requires special testing. Our Gemologists use advanced equipment to test the stones and distinguish if the stone is natural or synthetic.



FT-IR analysis is a technique used to measure the materials absorbance of infrared light at various wavelengths. WGI laboratory will provide you information about the material’s chemical composition, that aids the identification of treatment, origin and synthetic materials along with observation of the material under magnification.



If you’re considering investing in a diamond or a piece of jewellery, it is essential to have the piece evaluated to ensure you are getting what you paid for.

We recommend you to have a verbal pre-grade/evaluation done on the item before buying it, so you can rest assured that the item will fulfil your expectations. Our expert team will explain the details of the quality and the value of the item so you have a better understanding of your investment.



Capturing the beauty of your investment can be difficult with a regular camera.  WGI has a team of professional photographers trained specifically in Jewellery and gemstone photography using advanced equipment.  If you need a professional image of your investment for insurance or keepsake purposes, please ask to speak to our professional staff.

360° VIDEO

WGI offers 360° video imaging of diamonds, gemstones and jewelry.  A 360° video in HD is the closest online experience you can have to seeing a diamond in real life. It’s a new way to showcase the diamond and capture all parts of the diamond thoroughly and precisely and bring it to life as opposed to static images.

SCANOX PROPORTION High Resolution Grading System

Advanced system based on HD digital camera and high speed measurement capacity. This machine is designed for superior and accurate evaluation of a diamond’s proportion, symmetry, and extra facets, according to the highest standards in the world.



A security seal is a tamper-proof container in which your diamond is sealed for security with a summary of the diamond report. The security seal is available upon request.


The inscription is visible under 10x magnification. This process does not affect the quality of the stone and is permanent provided the diamond is not repolished. Diamond manufacturers or any Branding diamond holding are now able to create their own brand name diamonds distinguishing their stones over the competition. Inscriptions can be done for any conceivable purpose, from branded inscriptions , insurance, reliable to send stones by memo and to personal dedications. A large number of diamond and gemstone labs use the Gemscribe. Gemscribe is a reliable, accurate machine and does not cause any diamond damage.