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GIA Laboratory

GIA is considered the world's most trusted name in diamond grading and gemstone identification. Since 1931, GIA has been dedicated to ensuring the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science, and professionalism. It is the corporate birthplace of the International Diamond Grading System™ and the creator of the famous 4Cs of diamond value — color, clarity, cut and carat weight.

GIA's D-to-Z color-grading scale and Flawless-to-I3 clarity-grading scale are recognized by gem and jewelry professionals everywhere. And, by extension, the GIA Diamond Grading Report, Diamond Dossier®, and Gemological Identification Report are considered the world's premier gemological credentials.

With operations in 14 countries, including 7 laboratories, 4 search centers, 12 campuses, and more than 1,500 employees worldwide,the Institute's diamond graders, researchers, and educators are regarded, collectively, as the world's foremost authority in gemology. And together, they carry on GIA's proud tradition of research, discovery, and education.

For information about GIA Laboratory Services, visit our Web site at http://www.gia.edu/.

GIA Hong Kong Laboratory Limited

Easy, convenient access to GIA's world renowned laboratory services right here in Hong Kong

  • On-site grading, inscription services, and sealing services
  • Fast, convenient local take-in and return
  • Expediting all other diamonds, colored stones, and pearls to GIA Laboratories worldwide for service
  • Grading reports unrivaled for their accuracy and precision

Plus, GIA Hong Kong offers a full array of online services with My Laboratory. With GIA's secure portal, you can place orders, preview results, track shipments, and manage many aspects of your account, all online, 24/7!!

25th Floor, Prosperity Tower,
39 Queen's Road Central,
Hong Kong
T 852 3166 7000
F 852 3521 1697
E: giahongkonglab@gia.edu
Hours: Monday - Friday, 9:00 am - 6:00 pm


Hong Kong Education
T 852 3166 7001
F 852 2334 0567

Hong Kong Laboratory
T 852 3166 7000
F 852 3521 1697

World Headquarters
T 1 760 603 4000
F 1 760 603 4080

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  • Office Location

  • Copyright © 2011 GIA Hong Kong All Rights Reserved.
    GIA Hong Kong Ltd.
    3/F, China Building, 29 Queen's Road Central, Hong Kong