Emerald Identification & Evaluation
An Online Course by GUILD Institute of Gemology
Presented by Mr Andrew Lucas
Trade-Focused Emerald Expertise
In late 2026, GUILD Institute of Gemology will launch an online course dedicated entirely to emerald identification and evaluation — designed for professionals who buy, sell, source, or work with emeralds in the real trade.
Led by Mr Andrew Lucas, this course emphasises decision-making, risk assessment, and commercial reality rather than identification alone. It bridges the gap between laboratory science and actual market behaviour.
An applied emerald course designed for people who buy, sell, source, or work with emeralds in the real trade.
Course Positioning
Field-Based Realism & Trade Relevance
This course goes beyond laboratory-focused or academically abstract programmes, delivering knowledge grounded in real-world commercial practice.
Treatment Grading & Disclosure
Understand treatment grading protocols and disclosure practices as they apply in real commercial transactions — not just theoretical classifications.
Source-Specific Value Impacts
Learn how geographic origin affects market perception, pricing dynamics, and commercial value across different emerald sources worldwide.
Rough Emerald Evaluation
Develop practical skills in evaluating rough emerald material under real buying scenarios — from mine site to trading floor.
Supply Chain & Market Behaviour
Gain insight into the actual structure of the emerald supply chain and how market behaviour influences buying decisions and pricing.
Core Areas of Study
Each module is designed to develop practical skills and commercial awareness that translate directly to the emerald trade.
Emerald Identification Fundamentals
Master the core identification techniques for natural emeralds — including spectroscopic analysis, inclusion study, and origin indicators that form the foundation of professional evaluation.
Treatment Analysis & Market Impact
Navigate the complex landscape of emerald treatments, from oil and resin to modern filling techniques, understanding how each treatment level affects market value and disclosure obligations.
Origin Determination & Pricing
Explore source-specific characteristics of emeralds from Colombia, Zambia, Brazil, Ethiopia, and emerging sources — and their direct impact on pricing and market perception.
Rough Evaluation & Buying Strategy
Build practical competence in assessing rough emerald parcels, understanding yield estimation, colour prediction, and risk factors that shape purchasing decisions in the real trade.
Commercial Reality & Trade Practices
Bridge the gap between academic gemology and commercial application — learning negotiation contexts, market dynamics, and the decision-making frameworks used by experienced trade professionals.
Mr Andrew Lucas
Andrew Lucas brings decades of emerald expertise spanning field research, market analysis, and supply chain engagement across major emerald-producing regions worldwide.
His approach combines rigorous gemological science with the practical commercial knowledge that distinguishes competent professionals in the global emerald trade.