43:39

33. How to Identify Rocks

8:09

Tour of the ASU Center for Meteorite Studies collection

12:53

100 carat rough opal fresh out of the mine gets cut

26:16

Can you GROW an Opal?

26:52

Rough opal can be risky business - The outcome is incredible

34:28

Does this rough opal become the cut of the decade?

24:02

Jade Hunting, How to "Identify" and "Test" Jade!

33:28

Rough opal cut of the year - I make a huge $45k profit