A-Type Reference Samples
Study with verified, field-sourced reference samples — the same materials used in our laboratory operations.
GUILD Institute of Gemology offers comprehensive in-class courses that combine theoretical knowledge with hands-on practical experience. Our curriculum is built on decades of field research and laboratory expertise, providing students with real-world skills and industry-recognized certifications.
With access to A-Type reference samples and cutting-edge laboratory instruments, students gain unparalleled exposure to the tools and methodologies used by professional gemologists worldwide.

Train with professional-grade gemological instruments and A-Type reference samples used in real laboratory operations.
Learn from active researchers and laboratory professionals who bring real-world expertise to the classroom.
Earn industry-recognized credentials including GCG and GRSG designations upon successful completion.
Join a worldwide community of gemological professionals with teaching locations across Asia and beyond.
Earn globally respected credentials that validate your expertise and open doors to professional opportunities in gemology.

A comprehensive certification validating expertise in gemstone identification, grading, and evaluation across all major gem categories.

An advanced designation for professionals demonstrating exceptional skill in gemological analysis and market evaluation.
Each course is designed to provide deep, specialized knowledge in specific areas of gemology, led by experienced professionals.








