International Gem Society
Members Services Index
Address Changes -
IGS Gemology Course - Gem Lending Program - Certification Programs - Evaluation Program
Article Submissions - Faceting Design Submissions
American Society of Gemcutters Certifications
IGS Gemology Course
Costs and Requirements
Course MaterialsThe gemology course is divided into sections.
An Introduction to Gemology covers basic subjects of interest to the general public. These are non-technical articles designed to open the doors to a complex subject.
Advanced Gemology explains the technical terms used to define gems and introduces the more complex subjects.
Practical Gemology goes one step further, explaining how to use the tools of gemology and what to do with the information they supply. This is the essence of gem identification.
Gem Grading details the factors used in grading diamonds and colored stones.
Advanced Gem Information gives details on specific gems.
This information can be found in our Reference Library. Most students will want to start with the "Introduction to Gemology" lessons and then progress into the "Advanced Gemology" section.
Gem Lending ProgramTo further your study, we lend out packages of gems. There are no limits on how many you can borrow. You can use and many or as few as you feel are necessary.
The stones are chosen to give you a good representation of what you will encounter as a professional gemologist. Most of the gems are common varieties, like amethyst, diamond, and garnet. There are faceted gems and cabs, natural, synthetic, and assembled stones. Most are of a reasonable size, but there are also some tiny gems. They are harder to work with, but they are common in jewelry so practice with them is a necessity.
For the Master Gemologist program there are also rare gems, carvings and rough. The rough has been specially selected to insure that it is possible to identify with standard gemological tools. Lapidary equipment isn't required to identify these pieces. (In business, if someone where to bring you a lot of rough to identify, you might need to polish areas in order to see the interior and take RI readings.)
The gems are in lots of fifteen. To order gems, you must first supply us with a deposit of $200. This will be refunded at the end of your study, provided all the gems are returned. You will be charged for any gems lost.
There is a fee of $30, plus shipping, for each set of fifteen gems. Forms will be provided for both identification and quality grading. Return the forms to the IGS for grading before returning the gems. The corrected forms will be sent to you for review. You can then compare the graded forms with the gems before returning them to us.
Please try to complete and return each lot within thirty days. Let us know if additional time is needed. If we do not hear from you within two months, your deposit will be forfeited.
Certification ProgramsProfessional Gemologist Program (PG)
To become certified as a "Professional Gemologist", PG, one must demonstrate their knowledge, the ability to use standard gemological tools, be able to identify common gem materials and separate natural gems from their synthetic counterparts. In addition, one must demonstrate fundamental skills of grading by color, clarity, cutting, and size per species.
Any member may apply for certification.
You will need all the standard tools of gem identification. You do not need to purchase any books or reference materials, all the information you need is included with your membership.
Testing will be in two segments, a written test and a practical exam. Both exams will be conducted through the mail. There is a $30 grading fee, (plus shipping,) for each section, plus a $200 deposit will be required for the gems. This will be refunded, provided all the gems are returned. You will be charged for any gems lost.
Master Gemologist Program (MG)
IGS Evaluation Program
This program is set up to allow members to have their gems or jewelry reviewed by professionals.
Registered mail is the safest way to send valuables. Insured regular mail is less expensive.
Among the areas covered are:
Over all quality of workmanship.
Articles are welcome on gemology, metal smithing, lapidary and related subjects. The only requirement is that technical terms must be defined.
Faceting Design Submissions
Design submissions must be accompanied with an example cut in gem material. The gem will be returned within a few days.
To inform us of a change of address, or other account information, send an email to firstname.lastname@example.org.
American Society of Gemcutters Certifications
The International Gem Society recognizes the high standards set by the American Society of Gemcutters.
Certified Supreme Master Gemcutter, (CSM)
Certified Master Gemcutter, (CM)
Congratulations to all American Society of Gemcutters, Master and Supreme Master Gemcutters. We applaud your accomplishments!