Jewelry certificate written statement of an expert opinion proves the quality evaluation of jewelry.
We issue a certificate by Ms. Knock on our gemologist. Ms. Knock graduated from Thammasat University.
Then, she is the graduate gemologist qualification of a difficulty A.I.G.S.(ASIA INSTITUTE of GEMOLOGICAL SCENCES).
Then, she acted as the teacher for ten years by A.I.G.S. She brought up into the graduate gemologist the students who gathered from every country in the world. Her former students are playing an active part in every country in the world.