My Profile  |  Contact Us  |  Member Portal

GIA Lab Classes

Gemological Institute of America (GIA), in recognition of its shared history with the American Gem Society (AGS), and as part of its mission, is sponsoring the Diamond Grading and Gem Identification lab sessions to be offered at the AGS Headquarters in Las Vegas. To apply to participate, scroll down to complete the application form. Please note that applying to attend does not guarantee enrollment, and participation will be confirmed per the listed deadlines.

Fall Classes

Fall Classes Forms must be completed by September 16, 2022. Participants will be confirmed and notified by September 23, 2022.

Five-Day Diamond Grading Lab (Closed)
Monday, October 10, 2022 – Friday, October 14, 2022
9:00 a.m. to 5:00 p.m. each day

During this lab, you will learn how to grade diamonds using a gem microscope and jeweler’s loupe, how to master the diamond grading system, discover time-saving shortcuts to determine a variety of grading factors, and how to read a diamond grading report. You will also have the opportunity to practice diamond grading techniques.

Gem Identification Lab (Limited Seats Available)
Monday, October 17, 2022 – Friday, October 21, 2022
9:00 a.m. to 5:00 p.m. each day

Gain confidence with gem identification while using such tools as a microscope, a refractometer with polarizing filter and a removable magnifying eyepiece, refractive index (RI) liquid, a polariscope, a dichroscope, a spectroscope, and a loupe. You’ll learn how to identify natural gemstones, imitations, and synthetics, as well as discover effective testing procedures for colored stones that are now in circulation. 

If you have any questions regarding prerequisite education for the labs, please contact GIA prior to applying.

Questions? Contact the Experience team at or 702.255.6500 (option 4).