1. There are GIA evaluation offices in Bangkok, Mumbai, Carlsbad, new york, Gaborone, Ramat Gan, Hongkong, Tokyo and Johannesburg.

2.GIA has campuses in Bangkok, London, Carlsbad, Mumbai, Dubai, new york, Gaborone, Seoul, Hong Kong and Taipei.

3.GIA has a regional branch in Dubai.

There are GIA research centers in Antwerp, Carlsbad, Bangkok and new york.

In other words, if the certificate is issued in China, it will be issued in Hong Kong, or it needs to be reissued.

In fact, it depends on the diamond, only the parameters of the diamond. GIA's appraisal standard for diamond 4C is uniform.