One of the leading gemological institutions in the world, the IGI was established in 1975 in Antwerp, with a sister laboratory in New York, and has since become the largest independent gem certification and appraisal institute renowned for its quality services, extensive experience and expertise. What originally began with just 3 staff members has expanded to over 250 professionals dedicated to a remarkable standard of excellence in Antwerp, New York, Bangkok, Mumbai and Tokyo.

The IGI issues more than 400,000 reports per year. Thousands of jewellers, retail stores, insurance companies, internet sales organisations, catalogue companies, accounting and securities firms and consumers rely on the IGI reports.

International Gemological Information, a division of IGI, was established in New York in 1981, as a source for unbiased appraisals of gems and jewellery. Like its parent company, IGI Information is totally independent of all commercial sales organisations and does not trade in diamonds or precious stones. Therefore IGI Information is able to provide objective and accurate appraisals and identification reports, alongside appraisal updates and estimates in case of damage.


IGI Diamond Report
A detailed analysis of the stone's characteristics, including carat weight, color, clarity, polish and symmetry, and proportions. A diamond diagram with plotted clarity characteristics is also included. To see an example, click on the certificate on the right.

IGI Hearts and Arrows Diamond Report A report rating optical symmetry.

IGI Diamond ID
A passport-sized document that contains the same detailed information as the Diamond Report, without the plotted diagram. This report is also available in a more compact credit card size.

IGI Hearts and Arrows Diamond Report
A report rating optical symmetry.