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T.G.L.- Japan Technical Gem Laboratory Co. Ltd.
 

T.G.L Japan is a member of the Association of Gemological Laboratories (A.G.L) in Japan. It operates under the strict rules of AGL Japan and represents the highest standards of Japanese gemological grading.Trust and Accountability to quality and service combined with value for tradition are the prime standards of TGL.
With 5 branches located in 3 different important positions, T.G.L. is aimed at serving the important Japanese and East Asian demand for guaranteed certificates, and offers a strategic relationship with partners in Far East locations and worldwide.

T.G.L branches:

T.G.L. Japan – The main office is located in Tokyo. Other offices are located in Osaka and Nagoya.

T.G.L. Thailand - Was established in 1990 in Bangkok and serves other Far East regions. It is now the largest gem lab in Thailand, specializing in precious and semi-precious gemstones.

T.G.L Israel - Is located in the diamond exchange building in Ramat Gan, and is aimed at fulfilling the large and unique Israeli diamond trade to Japan, serving the important Japanese and East Asian demand for guaranteed certificates

T.G.L. offers all of the gemological services you need, among which:
  • Clarity Grading According to AGL Standards
  • Color Grading Conforms to JJA/AGL Master Stones (reg. no. of master stones is 069)
  • Competitive Price
  • Stones can be Graded and Delivered within 8 working Hours
  • Strategic Relationship with Tokyo Nagoya, Osaka and Thailand Laboratories for Onsite Requests
  • Sorting up-down
T.G.L. presidents:
T.G.L Japan is a well respected Japanese gemological company headed by Kunihiku Jogan, a graduate gemologist from the GIA USA.
Kunihiku Jogan has 29 years of experience in gemological grading and has held the post of Secretary General of AGL Japan for the past 17 years.
The post of Secretary General of AGL Japan for the past 17 years. His son, Tatsushi Jogan is responsible for T.G.L Israel, and has worked very closely with T.G.L Japan in training both Japanese and Israeli gemologists in identification and grading of diamonds and gemstones.
For further information, please contact us:T.G.L. Japan
                                                                            T.G.L. Thailand

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