Is the certificate authority of Hong Kong Gem Appraisal Institute?
Authority. According to relevant public information, the most authoritative colored gems authentication institution in Hong Kong has a testing center in Hong Kong, China, and the authentication certificate has authoritative benefits. GRS, Gubyrin and SSEF are the three major strength appraisal institutions in the jewelry industry, and they are authoritative in testing colored gems, and the three international certificates are also authoritative.