ISG Diamond Grading Classroom Registration

Diamond Grading Class: Date Coming Soon!

Diamond Grading is a 3-day class of evaluating and grading a variety of diamonds, including rough crystal to finished diamonds for jewelry. This important class will include a day of real-time instructor-led learning about evaluating rough to polished diamonds. Then, there will be two days of hands-on learning as you evaluate and grade diamonds for yourself from our inventory of pre-graded diamonds. It is an important learning opportunity for everyone working in a jewelry store or seeking to be employed by a jewelry company.


This class is intended for beginner to intermediate-level gemologists who are seeking instructor-led, hands-on learning of the evaluation and grading of diamonds, from rough crystals to faceted diamonds. Classes are 8:30 am – 5:00 pm.

To maximize each student’s learning opportunity, we are limiting this class to 8 students.


The class will include the following schedule:

  • Monday  : A day of instruction lectures and videos with hands-on practice of how diamonds form, evaluating rough diamonds, the history of diamond cutting, diamond grading, and the various gemological tools that allow us to grade diamonds.
  • Tuesday: A full day for instructor-led diamond grading practice utilizing our ISG Student Reference Collection of over 100 pre-graded diamonds.
  • Wednesday: A second full day of instructor-supported diamond grading practice to allow students to get a complete learning experience in diamond grading and evaluation.

Real-Time, High Definition Demonstrations

Classes included real-time, high-definition demonstrations of the gemology tools and techniques and diamond grading procedures to help students gain knowledge in the fastest and most efficient ways.

ISG Student Study Reference Set and Library

Students will have the opportunity to work with world-class gemological tools and equipment, including our ISG Student Reference Library, which includes a variety of rough and finished diamonds for hands-on study.

Upon successful completion of this class the student will have an intermediate to advanced understanding of diamond grading and evaluation.

Instructor: Your instructor is Robert James FGA, GG, president of the ISG. Mr. James is a Fellow of the Gemmological Association of Great Britain, a Graduate Gemologist of the Gemological Institute of America, and a former Certified Gemologist of the American Gem Society. He has taught the FGA course program as an Allied Teaching Centre of the Gem-A, and taught gemology classes for the Dallas County Community College District and the Okaloosa-Walton Community College District. Mr. James holds a Higher Education Teaching Certificate from Harvard University.


Tuition: US$500.00 complete

Class Size: Class is limited to 8 students to ensure each student gets personal service.
Gemological Tools:
 Provided by the ISG with each student having their own gem tool set to work with. Students will not need to bring anything to this class.
Previous Training: Not Required. Beginners welcome to this class.
Place: ISG Classroom, Helotes, Texas (2 miles west of San Antonio, Texas)
Dates: To Be Announced
Times: 8:30 am – 5 pm each day
Certificate of Completion: A Certificate of Completion will be awarded to each student.
Travel Information: The ISG can provide information on suggested hotels, but travel arrangements are the student’s responsibility.
Registration: Register for this class using the form below. Please read the next paragraph for further details.

  • Tuition is due at registration to hold your place in this limited-size class. Registrations cannot be reserved without full tuition payment.
  • Cancellation is available at the following rates: 50% refund before class date After this date, no refunds will be given.
  • The class size is a minimum of 4 students and a maximum of 8 students. If the class fails to be filled or any other issue arises, 100% refunds will be provided.

Contact the ISG for any questions. To reserve your seat, please use the Registration Form below.