What does GTL stand for?

Gem Trade Laboratory (Gemological Institute of America)

This definition appears very rarely and is found in the following Acronym Finder categories:

Organizations, NGOs, schools, universities, etc.

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Samples in periodicals archive:

The GIA Gem Trade Laboratory Diamond Grading Report is the benchmark for the international gem and jewelry industry.

Interesting Diamond Facts

As a policy, the GIA Gem Trade Laboratory does not grade clarity enhanced diamonds.

GIA Legal Actions Stop the Use of Counterfeit Diamond Grading Reports

Liddicoat was also instrumental in organizing and building GIA's renowned Gem Trade Laboratory.

Gem and Jewelry Industry Mourns the Passing of Richard T. Liddicoat, ...

For the first time in its history, GIA's internationally renowned Gem Trade Laboratory has opened its doors to the public by allowing a camera crew to film the Institute's high-security diamond grading operation.

ADVISORY/New GIA Video Offers Rare, Behind-the-Scenes Look at Diamond ...

Newstream.com Digest: Backstreet Boy Howie D. Speaks Out on Lupus ...

Three garnets from the 2 tonne bulk sample were sent to the Gemological Institute of America, Gem Trade Laboratory, Identification Report 10442343, August 19, 1998, confirmed the gem-grade.

Anglo Swiss Resources Inc.: Impressive 138.4 Carats/tonne Gem Garnet ...

The most widely used and respected reports are those issued by the GIA Gem Trade Laboratory.

FEATURE/Buying a Diamond -- Three Basic Steps