Notice: Please be advised that our report verification system is in Beta.
Please contact [email protected] for any urgent verification. For phone Inquiries between 9am and 5pm ICT (GMT +7) Monday  – Friday, contact +66 0930198444

Contact Us

ICA | GemLab are experts in the origin determination and treatment detection of colored gemstones. Our expertise comes from our unique ability to combine knowledge of renowned gemologists with the latest technology available to meticulously inspect your gemstone and determine more than 40 geographical deposits. We pride ourselves on our
responsible, ethical and transparent services – three cornerstone values of our company. 

The ICA | GemLab is a gemological reporting authority headquartered in Bangkok, Thailand, operating in affiliation with the International Colored Gemstone Association (ICA). It has issued gemological reports on colored gemstones since 2017.


Head Office

ICA Gem Laboratories.Co., Ltd.
919/7-8, 6th Fl., Jewelry Trade Center, Silom Road, Silom Sub-District, Bangrak District,

HongKong Office

ICA Gem Laboratories.Co., Ltd.
Unit 11/8F. , Lippo Sun Plaza,
No. 28 Canton Road,
Hong Kong

Taiwan Intake

ICA Gem Laboratories.Co., Ltd.
7F.-1, No.29-2 Sec. 4 Ren’ai Rd.,
Da’an Dist.,