Chow Tai Fook and GIA to Discontinue Blockchain Service

Chow Tai Fook and GIA are discontinuing its pilot service, the GIA blockchain diamond grading report, on October 31, 2022. Clients with this report registered to receive it through the Chow Tai Fook T Mark App. Rest assured, this discontinuation will not affect the security of your report.

You may continue to access your report on GIA’s Report Check website ( or in the new GIA App for iOS and Android. You may also request a complimentary paper report from Chow Tai Fook. To request a paper report or if you have questions, please contact Chow Tai Fook Customer Service at (852) 2526 8649.