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        INTERNATIONAL GEM SOCIETY

        Online Courses

        Invest in yourself and learn valuable skills around gemology.

        Course Directory


        Select course

        Beginner 5 Units 22 Lessons
        Sapphire Specialist Mini Course

        Beloved for its celestial blues and violets and exceptional hardness and durability, the sapphire is a long standing favored gemstone. Take an in-depth look at sapphires, from how they form to how to appraise them. Looking to buy or sell a sapphire? Learn how to determine sapphire quality. Every sapphire lover will learn something new in this course.

        Beginner 4 Units 21 Lessons
        Ruby Specialist Mini Course

        Do you love all things ruby? If you find yourself drooling over this king of gems, you’ll love this course. Take an in-depth look at rubies, from how they form to how to appraise them. Looking to buy or sell a ruby? Learn about ruby treatments and evaluating ruby quality. Every ruby lover will learn something new in this course.

        Beginner 6 Units 25 Lessons
        Pearl Specialist Mini Course

        Attention all pearl lovers! If you just can't resist the draw of these spherical gems, you'll love this course. Dive deep into the world of pearls to learn how they form and what gives them their remarkable glow. Looking to purchase or sell pearls? Learn about different types of pearls, from cultured Akoyas to ultra-rare melo pearls, and how to properly care for them. Every pearl enthusiast will learn something new in this course.

        Beginner 4 Units 22 Lessons
        Opal Specialist Mini Course

        Attention all opal lovers! If you have found yourself mesmerized by the changing color patterns of this mineraloid, you'll love this course. Do a deep dive into the properties of opals to discover how they are formed and reflect light. Looking to purchase or sell an opal? Learn about different types of opals and how to properly care for them. Every opal enthusiast will learn something new in this course.

        Intermediate - Advanced 7 Units 43 Lessons
        Diamond Specialist Certification Course

        Learn the fundamentals of diamonds — from optical and physical properties to grading and ethical and legal issues. Learn to distinguish natural diamonds from synthetics and diamond simulants. Keep the kit, which includes one natural, jewelry-grade diamond. If you successfully pass the quiz and gem identification test, then you will be an IGS-certified Diamond Specialist.

        Intermediate 6 Units 66 Lessons
        Professional Gemologist Certification Course

        The International Gem Society (IGS) was one of the first online schools of gemology to serve a global audience. Our goal is to provide a flexible and affordable education in gemology. IGS's founder, Donald Clark, CSM IMG, created a robust testing process to ensure that those with IGS certification would stand out in the crowd. IGS continues to use the testing process created by Donald Clark to ensure continuity and rigor.

        About IGS Courses


        From Actinolite to Zoisite, dig into every facet of the fascinating world of gems with IGS gemology courses!

        Learning

        Pick and choose from what subjects interest you.

        Guidance

        Courses are guided lesson-by-lesson including progress tracking.

        Testing

        Test your knowledge with written exams and real gem ID exams.

        Certification

        Earn a certificate to help get a leg up in your career.

        What Our Students Say About Us


        testimonials

        "What started as a hobby is now a small home business for my wife and I."

        "I have never known or heard of an organization that offers so much for its members, and at such a low cost. What started as a hobby in 1998 and now is a small home business for my wife and I has been made so much easier by the information you supply. Thank you."
        Ernest and Peggy Roisch Rainbow Rocks, LTD

        "IGS is a Godsend for me"

        "I have been on the distant sidelines of the jewelry business for a long time with a great love of colored stones and working with gold. I must tell you that IGS is a Godsend for me, as I do not have the resources or the six months required to get a GG from the GIA now."
        Charlie Bernheiser IGS Member

        "I owe my gemology knowledge to IGS."

        "You are indeed a “Guru” in the true sense of the term. Your knack of simplifying the most complicated topics and your constant endeavor to update the existing information are really unique. I owe my gemology knowledge to IGS."
        Nitin Pawaskar IGS Member

        "It doesn't matter how much you think you know about gems, you never stop learning"

        "You know the best thing that I've learned from your great course is that it doesn't matter how much you think you about gems, you never stop learning. Each day there is something more to learn, and it will never stop. Thank you for all the help, education and support that you give IGS members."
        Peter Checkley IGS Pro Member
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