About Us
Thailand Gemological Laboratory
TGL's operations are compliant with ISO/IEC 17025 and have been certified by GIT Standard (GIT1001-2563). We use advanced instruments to test gemstones using scientifically recognized and certified methodologies.
Our Mission
to be an ethical and sustainable organization that protects client confidence.
We are committed to providing our clients with timely, accurate, and personalized service.
Address
991 Siam Paragon Building 1st FL.,
Room 1-35 Rama 1 Road,
Pathumwan, Pathumwan, Bangkok 10330
Thailand
Tel: (66) 2-129-4360 | Mobile: (66) 63-196-1648
Opening
hours: Tuesday - Sunday 10.00 AM – 6.00 PM