About Diamond Grading Reports

About Diamond Grading Reports

Most diamonds we currently sell are accompanied by Gemological Institute of America (GIA) reports, with a smaller number with reports from the International Gemological Institute (IGI).

About GIA

The Gemological Institute of America (GIA), which was established in 1931, is headquartered in Carlsbad, California.

Besides being a leading educational institute, GIA provides diamond grading reports, which the GIA Gem Trade Laboratory issues.

GIA grades diamonds of all shapes and sizes and was the creator of the 4C's (clarity, colour, cut, and carat weight).

GIA Diamond Report

GIA Diamond Reports are issued for diamonds of all shapes and sizes above 1.00ct.

The report includes a comprehensive analysis of a diamond's quality, an assessment of the diamond's 4C's and a plot of the diamond's clarity characteristics, and also includes polish and symmetry grades. 

Example of a GIA Diamond Grading Report

(click on the report for more information on the various report fields)

GIA Diamond Report Sample


GIA Diamond Dossier®

The GIA Diamond Dossier® is a compact report for diamonds of all shapes weighing under 1.00ct on GIA's D-Z colour scale.

The Dossier includes an analysis of the diamond's 4C's but — unlike the GIA Diamond Report — does not include a plot of the diamond's clarity characteristics.

All diamonds with a GIA Diamond Dossier have the Dossier number laser-inscribed on the girdle.

Example of a GIA Diamond Dossier®

(click on the report for more information on the various report fields)


About IGI 

Around the world, IGI's (International Gemological Institute's) diamond reports bring confidence when buying or selling diamonds. IGI have a staff of over 450 professionals dedicated to a standard of excellence second to none, and issues more than one million reports per year.

IGI is the largest organisation of its kind, with operating laboratories and offices in locations including Antwerp, New York, Hong Kong, Mumbai, Bangkok, Tokyo, Dubai, Tel Aviv and Toronto.

IGI Diamond reports

IGI Diamond Reports are issued for diamonds of any size. A plotted diagram of the diamond's characteristics and a graphical representation of its proportions appear on many IGI documents. 

Example of an IGI Diamond Report

(click on the report for more information on the various report fields)

IGI Diamond Report Sample