Colored Stone Grading

This class is only available to Distance Education Teach-out students.

Acquire the skills to determine the color, clarity, and cut for a range of colored stones.

Diamond Grading

This class is only available to Distance Education Teach-out students.

Learn to grade diamonds using a gem microscope and jeweler’s loupe. Understand GIA’s Diamond Grading System.

Gem Identification

This class is only available to Distance Education Teach-out students.

Learn the time-tested procedures and identification skills used by the Institute’s renowned experts.

Note: Effective January 1, 2020, students will be required to complete the Gem Identification Lab class (GEM240L) before enrolling in the Gem Identification eLearning course (GEM240).

Pearl Grading

This lab class is a GIA professional development offering.

Discover how experts determine the quality of Akoya, freshwater, South Sea, and Tahitian pearls using GIA’s 7 Pearl Value Factors™.