Gemology Courses, On Your Own Time
Explore our growing library of free, self-paced gemology video courses — organised into themed collections drawn from Mr Andrew Lucas's years of educational content, from beginner fundamentals to focused deep-dives.
Register for a free account to start watching right away. Each collection includes short interactive quizzes along the way, so you can check your understanding as you go — no prior gemology background required.
Learn gemology the way our team actually learned it — one well-explained video at a time.
GUILD Institute of Gemology
Simple Access, Steady Growth
Every course is free. Register once, learn at your pace, and come back for new lessons each month.
Free Video Collections
Multiple themed collections of instructional videos, grouped so you can follow a clear path from one topic to the next — all free to access.
Register & Start Watching
Create a free account, get approved, and begin watching courses right away through your member portal.
Learn At Your Own Pace
Watch whenever suits you, with short quizzes along the way to help the material stick.
Updated Every Month
We add new course content at the beginning of each month. Once registered, check back regularly — there will always be something new to learn.
Topics Covered In Our Free Courses
Every free gemology course draws on real laboratory experience — from grading fundamentals to spotting synthetics and treatments.
Diamond Grading Fundamentals
Learn the 4Cs the way working gemologists apply them, from cut proportions to clarity characteristics under magnification.
Colored Stone Identification
Recognise ruby, sapphire, emerald and other colored gemstones by their optical and physical properties.
Pearls & Organic Gems
Understand how natural, cultured and imitation pearls are told apart, along with other organic materials used in jewelry.
Jade & Feicui
Study the grading criteria behind jadeite quality, from color and translucency to common enhancements.
Synthetics & Treatments
Spot lab-grown stones and common treatments before they reach the trade.
Buying With Confidence
Apply what you learn to everyday sourcing, appraisal and buying decisions in the gem and jewelry trade.