Gem Identification #1
5-Day Practical Class
Gem Identification #2
5-Day Practical Class
Lab-Created & Treated Gems
5-Day Practical Class
Coloured Gemstone Grading #1
5-Day Practical Class
Coloured Gemstone Grading #2
Online Class
Diamond Grading & Lab-Created Diamonds
8-Day Practical Class
Gem Testing Beginners Workshop
1-Day Practical Class
Understanding Inclusions Workshop
1-Day Practical Class
Gemstones Treatments Workshop
1-Day Practical Class
Laboratory-Created Gemstones Workshop
1-Day Practical Class
