World Gemological Institute is an international organisation providing gemological education, research and certification services, from its laboratory in the heart of London's diamond district, Hatton Garden.
In 2016, WGI moved its headquarters from Ramat Gan's Israel Diamond Exchange to a new, London-based laboratory in the heart of the diamond district, Hatton Garden.
WGI is committed to promoting and preserving the integrity of the gemstone industry, providing unbiased and accurate information to buyers, sellers and enthusiasts of diamonds, gemstones and jewellery worldwide.
Our goal is to accurately identify, grade and evaluate diamonds, gemstones, pearls and jewellery; to distinguish whether they have been treated prior to purchase; and to determine their origin and authenticity.
We take great care with our customers' precious items and details, to a high standard of integrity.
The WGI laboratory is a meticulously organised workspace designed for the intricate processes of gemstone examination, equipped with specialised instruments calibrated to ensure precise measurements and assessments.
The standards of testing and equipment are in line with the industry's latest techniques, and WGI continually invests in innovative instruments — including FT-IR spectroscopy — for more precise and accurate gradings.
Our gemologists are graduates of the Gemological Institute of America (GIA) with extensive industry experience. To continually enhance their expertise, our staff take part in seminars, lectures and advanced gemological studies, including the Fellowship (FGA) of the Gemmological Association of Great Britain (Gem-A).
WGI enjoys a strong reputation within the diamond industry and among jewellery manufacturers and retailers, and adheres to a conservative approach in its gradings.
WGI has no vested interest in the outcome of your report, apart from ensuring you receive an expert assessment. All of our evaluations are fair and unbiased.
A conservative approach to grading delivers dependable, consistent results to every client.
WGI's commitment to education, research and certification makes it a resource for anyone interested in the world of gemstones.
Grading processes are updated according to the latest industry developments.
WGI offers professional gradings and evaluations to the global jewellery industry, with its laboratory in London and offices serving the trade in New York and Ramat Gan.
100 Hatton Garden, Suite 207, London EC1N 8NX, United Kingdom
info@wgi-global.com1 Jabotinsky Road, Maccabi Building, Diamond Exchange, Suite 1253, Ramat Gan, Israel
israel@wgi-global.comWhether you are exploring lab-grown diamonds, seeking professional gemological services or learning more about your jewellery, discover the expertise behind WGI.
