Gemstone Trickery?! [Treatments and Enhancements]
9:35
WTF Does Fake Mean?
17:17
Gemology Tools: What Do I Buy, When?
1:11:32
Gem-A Live: Understanding Gemstone Species and Varieties
12:18
How To Avoid Buying Gems That Are CRAP!
1:05:05
Playing the Blues: An Overview of Sapphire Treatment | GIA Knowledge Sessions Webinar Series
16:35
What to Read about Gems
9:45
First Time Heat Treating Rubies
13:09