The gemologist is the specialist every jeweler, auction house, and appraisal firm relies on. IIG America’s gemology track covers every skill the modern trade demands — identification, grading, origin detection, and treatment disclosure.
IIG’s teaching inventory is one of the largest in the world — students see and handle stones you simply can’t find anywhere else.
Gem-A curriculum alignment
Our curriculum is shaped by our long-running collaboration with the Gemmological Association of Great Britain.
60 years of refinement
Every lesson has been taught, retaught, and improved by IIG faculty since 1965 — this is mature pedagogy.
Courses
Gemology courses
Ruby – Sapphire – Emerald, The Big 3 (Online)
Online
A Professional Online Coloured Gemstone Gemology & Identification Course Starting immediately, gem aficionados, jewellery professionals and aspiring gemologists can study the world’s most precious and most traded...
Introduction to The Big 3 Gemstones The importance
Formation, Sources & Mining Geological formation
Mineralogy & Gemstone Classification Chemical composition
The Masters In Gems-Jewellery & Manufacturing – Elevate Your Expertise, Master the Craft! The Masters In Gems-Jewellery & Manufacturing (MIGJM) is IIG’s most elite, industry-immersive flagship course, built to create...
The Masters In Gems-Jewellery & Manufacturing – Elevate Your Expertise, Master the Craft
The Masters In Gems-Jewellery & Manufacturing (MIGJM) is IIG’s most elite, industry-immersive flagship course, built to create complete, market-ready jewellery professionals
Designed for those who want more than theory, MIGJM trains you to design, manufacture, price, sell, and scale jewellery as a business
Elevate Your Expertise. Master the Craft. Shape the Future of Jewellery. The Masters in Gems & Jewellery (MIGJ) is IIG’s flagship, industry-aligned certification course crafted to develop market-ready gems and jewellery...
Elevate Your Expertise
Shape the Future of Jewellery
The Masters in Gems & Jewellery (MIGJ) is IIG’s flagship, industry-aligned certification course crafted to develop market-ready gems and jewellery professionals
Jewellery Retail Sales Management isn’t just about selling; it’s about reading the room, understanding the emotion behind every purchase, and turning a simple interaction into a lasting relationship. Imagine a customer...
Jewellery Retail Sales Management isn’t just about selling; it’s about reading the room, understanding the emotion behind every purchase, and turning a simple interaction into a lasting relationship
Imagine a customer walking in, unsure and browsing… and walking out confident, connected, and converted, not because you pushed a product, but because you understood their story
This course is designed to build exactly that edge
Unlock the fascinating world of gemstones with Masters In Gemology at IIG, a premier course designed to transform your passion into expertise! This immersive course empowers you with the skills to identify, grade, and...
Unlock the fascinating world of gemstones with Masters In Gemology at IIG, a premier course designed to transform your passion into expertise
This immersive course empowers you with the skills to identify, grade, and value gemstones while gaining deep insights into market trends, global trade, and industry terminology
Through hands-on training with real gemstones and cutting-edge technology, you’ll master the art of distinguishing natural, treated, and synthetic stones with confidence
Gemology Graduate Course: Master the Art & Science of Gemstones and Diamonds The IIG Gemology Graduate Diploma Course offers a comprehensive education in diamonds and colored stones to provide in-depth knowledge of...
Gemology Graduate Course: Master the Art & Science of Gemstones and Diamonds The IIG Gemology Graduate Diploma Course offers a comprehensive education in diamonds and colored stones to provide in-depth knowledge of natural and artificial gemstones
With hands-on experience using the latest gemological equipment, you will work with real gemstones under the guidance of IIG experts
Through extensive practical sessions, this course equips you with essential skills to accurately evaluate, grade, and identify gemstones with precision
Gemology Professional: Master the Science & Art of Gemstones Dive into the World of Gemology with the Gemology Professional – Flagship Course, a structured, hands-on course designed for those aspiring to become...
Introduction to Gemstones Industry overview & significance
A Professional Coloured Gemstone Course on the Nine Planetary Stones (Navagraha Stones) Where planetary wisdom meets professional gemology. The Navratnam – 9 Precious Gemstones Course is a specialized, hands-on course...
Physical & Optical Properties of Navagraha Hardness,
A Professional Gemology Course & Gemstone Certification Course Diamonds may be forever — but so are the legacies of Ruby, Emerald, Sapphire, and Pearl. The Big 5 – Gem World Essentials is a comprehensive professional...
Introduction to the Gemstone World Introduction to
Formation, Mining & History Geological formation
Gemology of The Big 5 Diamond gemology, ruby sapphire
THE BIG 3 – RUBY, SAPPHIRE & EMERALD A Professional Colored Gemstone Gemology & Identification Course The Big 3 – Ruby, Sapphire & Emerald is a professional coloured gemstone gemology and identification course focused...
Gemstone World, Formation, Mining & History Introduction
Gemology & Classification of The Big 3 Ruby gemology,
A Professional Pearl Identification, Grading & Trade Certification Course The IIG Pearl Graduate (PG) Certification is a professional course focused on pearl identification, pearl grading, and pearl trade expertise for...
History, Origin & Pearl Formation History of pearls,
Pearl Types, Varieties & Classification Pearl classification:
Pearl Identification & Natural vs Cultured Evaluation
Pearl Grading & IIG’s 9 Pearl Quality Factors Size:
A Foundation Course in Gemstones, Identification & Value Factors Introduction to Gemology is a beginner-friendly, industry-oriented course created for anyone starting in the Gems & Jewellery field, from retail...
A “Gem-A Gemmology Foundation” refers to an introductory course in gemology offered by the Gem-A (Gemmological Association of Great Britain), which provides students with the basic knowledge and skills needed to...
A “Gem-A Gemmology Foundation” refers to an introductory course in gemology offered by the Gem-A (Gemmological Association of Great Britain), which provides students with the basic knowledge and skills needed to identify and understand common gemstones, including their properties, characteristics, and methods for distinguishing natural stones from treated or synthetic counterparts; essentially, it’s a foundational level of education in the field of gemology
Key points about the Gem-A Gemmology Foundation: Focus on basics: The course covers fundamental concepts like defining a gemstone, identifying common gem materials, understanding the “Four Cs” (carat, color, clarity, cut), and using basic gemmological tools like a loupe to examine stones
Practical application: Students learn to identify gemstones through visual observation, utilizing basic gem testing methods, and analyzing inclusions to distinguish between natural and synthetic stones
