Practice the same time-tested procedures and identification skills used by the Institute’s renowned gemological experts. Tools used include a microscope, a refractometer with polarizing filter and a ...
Practice identifying more than 60 species of gemstones, distinguishing natural from laboratory-grown gems and detecting gem treatments. You will carry out testing procedures and techniques on sets of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback