Practice with hundreds of stones to learn many of the identification techniques used by the experts of the Institute. Use gem-testing instruments to identify gemstones, separate natural gems from synthetics, and detect treated gems. Find out how - and when - to use gemological laboratory services. Learn how to use gem identification skills to protect your business from costly mistakes.

To complete this course you must have access to gem tweezers, a 10X loupe or microscope, refractometer with polarizing filter, optic figure sphere, dicroscope, polariscope, and spectroscope. These instruments are not included with the course materials, and must be acquired separately. Or, you can practice with these professional tools by enrolling in GIA’s Student Workroom. For complete student workroom activities, hours, and fees, please call GIA Florence:
Tel. +39-055-215964, Fax +39-055-2655522 or info@giaflorence.com

Prerequisite: Colored Stones