Gem Testing Laboratory

"GHI" is a Gem Testing Laboratory society based only in Thailand.

Objectivity: Gemological Hallmark International is purely a gemological entity and is not engaged in trading gemstones in any way, nor does it possess shares in any company that does. Our interests are purely gemological. Through our work we hope to achieve better disclosure in the marketplace of treatments and thus improve the gemstone industry as a whole.

"GHI" Gemological Hallmark International Co., Ltd. registered laboratory (officially accredited) Cooperation since in 2003).

Mission

To ensure the public trust in gems and jewelry by upholding the standards of honesty, science education, research and trustful laboratory services.

Responsibility for doing researches as well as gathering and analyzing information about domestic and international gem and jewelry markets to build a database.

To online gem and jewelry report database is one of the information center's important tools to provide.

The information center is willing to answer all the questions (Analyze, inspect, grade, standardize and assure the quality of gems, jewelry and precious metals productions)

And everything we do is still driven by this mission

Vision

To be one of the diamond and colorstone laboratory to conform to the rules for grading polished gem-diamonds set by the international buyers or traders.

Aims to serve as the principal honesty to develop, promote and support the Thai gem and jewelry industry to be able to compete in the global market."

Responsibility

1. Propose policies and plans in gem and jewelry industry development;
2. Research, examine gem, jewelry and precious metals and issue their quality certificates;
3. Provide training for general public in order to increase their knowledge and skill in gem and jewelry industry;