The Chanthaburi Gemological Laboratory Co. Ltd. (GLC) is an independent
gems laboratory in Chanthaburi gems market, Thailand. We are graduated
gemologists from Gemological Institute of America (GIA), Asian Institute
of Gemological Science (AIGS) and the faculty of gems, Burapha
University. The GLC aim is to serve the gems market with the academic
knowledge and research results to identify the gemstone. The result in
the certificate is based on the scientific properties of the stone by
the experience gemologist.