Gemological Institute Of America, Inc. Affiliated Entities

Last Updated 02/09/2026

BOTSWANA
GIA Education and Laboratory Limited
c/o Desert Secretarial Services (Pty) Limited
Plot 2482b
Tshekedi Crescent
Extension 9
Gaborone, Botswana
HONG KONG (LABORATORY)
GIA Hong Kong Laboratory Limited
The Bay Hub, 20/F
17 Kai Cheung Road, Kowloon Bay
Hong Kong		HONG KONG (Campus)
GIA Hong Kong Limited
The Bay Hub, 20th Floor
17 Kai Cheung Road
Kowloon Bay
Hong Kong
INDIA (LABORATORY)
GIA India Laboratory Private Limited
10th Floor Trade Centre
Bandra Kurla Complex
Bandra (East)
Mumbai, Maharashtra 400 098
JAPAN
GIA Tokyo Godo Kaisha
Yamaguchi Building 7, 11th Floor
19-9 Taito 4-chome
Taito-ku
Tokyo 110-0016, Japan
SINGAPORE
GIA Laboratory Singapore Pte. Ltd.
c/o Camelot Trust
137 Telok Ayer Street
#08-01
Singapore 068602
SOUTH AFRICA
GIA Education and Laboratory Proprietary Ltd.
GMI House Harlequins Office Park
164 Totius Street
Groenkloof
Pretoria 0027, South Africa
TAIWAN
GIA Instrument (Taiwan) Company
Tai-Shi Building, 3/F-1 and 3F-2
No. 270, Section 3, Nanjing East Road
Songshan District, Taipei City 10551
Taiwan
THAILAND (LABORATORY)
Gemological Research (Thailand) Company Limited
Mitrtown Office Tower 19th Floor
Units 1903-1910
944 Rama IV Road
Wangmai, Pathumwan
Bangkok 10330
Thailand		THAILAND (Campus)
GIA (International) Co. Ltd.
Mitrtown Office Tower 19th Floor
Units 1901-1902
944 Rama IV Road
Wangmai, Pathumwan
Bangkok 10330
Thailand
UNITED ARAB EMIRATES
GIA Laboratory FZCO
Uptown Tower, 13th and 14th Floors
First AI Khail Street
Dubai, United Arab Emirates
UNITED KINGDOM
GIA England
c/o TMF Group
13th Floor
One Angel Court
London
EC2R 7HJ
United Kingdom		GIA Laboratory Services UK Limited
c/o TMF Group
13th Floor
One Angel Court
London
EC2R 7HJ
United Kingdom

UNITED STATES OF AMERICA
Gemological Institute of America, Inc.
c/o Cogency Global, Inc.
1325 J Street
Suite 1550
Sacramento, CA 95814

c/o Cogency Global, Inc.
122 East 42nd Street
18th Floor
New York, NY 10168

c/o Cogency Global, Inc.
321 W. Winnie Lane, #104
Carson City, NV 89703

c/o Cogency Global, Inc.
4459B Bluebonnet Blvd.
Baton Rouge, LA 70809

c/o Cogency Global, Inc.
316 Berrhill Drive
Williamston, NJ 08094

Gemological Institute International, Inc.
c/o Cogency Global, Inc.
1325 J Street
Suite 1550
Sacramento, CA 95814

GIA Alumni Association, LLC
c/o Cogency Global, Inc.
1325 J Street
Suite 1550
Sacramento, CA 95814