What is this Mystery Stone?
9:51
The Truth Behind Bling
17:17
Gemology Tools: What Do I Buy, When?
15:08
Unboxing a Gemologist's Spectroscope
16:35
What to Read about Gems
3:53
How to Use the Polariscope
6:38
Gemstones go to Disco?! [ Polariscope Tutorial ]
8:53
How to use the DICHROSCOPE to test gemstones for pleochroism
9:34