Our Expert — G-ID Gemmological Laboratories
Leadership & Expertise

Expertise Behind Every Analysis.

Our laboratory is led by certified gemmologists and research scientists with deep expertise in classical gemmology, advanced spectroscopy, and machine learning applications.

Our Expert
Mr. Tasnara Sripoonjan

Mr. Tasnara Sripoonjan

Laboratory Director & Lead Researcher

Gemmologist ML Research Spectroscopy

Oversees all analytical workflows, calibration protocols, and research projects. Specialises in applying machine-learning algorithms to spectroscopic data for geographic origin classification and treatment detection. Published researcher with presentations at IGC, GIT, and industry conferences worldwide.

Machine-learning applications for ruby and sapphire origin classification using chemical data
IGC 2025 presenter — Automated Raman spectra processing for spinel origin determination
Explainable ML framework for magmatic sapphire classification — GIT 2025
Guest speaker — World Accreditation Day (TISI), Chiang Mai University STeP programme
Phase Transformation of Epigenetic Iron Staining

Phase Transformation of Epigenetic Iron Staining: Indication of Low-Temperature Heat Treatment in Mozambique Ruby

Machine-learning Applications in Gemmology

Machine-learning Applications in Gemmology: Classifying the Geographic Origin of Ruby and Sapphire Using Chemical Data

A Machine Learning Approach

A Machine Learning Approach in Ruby and Sapphire Origin Determination

Active in the Global Community.

International Conferences

Regular presenters at IGC, GIT, CIBJO, and regional gemmological conferences—sharing research and advancing industry knowledge.

Academic Collaboration

Guest lecturers at Chiang Mai University (STeP) and Srinakharinwirot University, bridging laboratory practice with academic training.

Published Research

Peer-reviewed publications on machine-learning applications in origin classification, spectroscopic methods, and garnet characterisation.

Work With Our Team.

Our gemmologists are ready to assist with your testing, research collaboration, or industry speaking engagements.

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