43:39

33. How to Identify Rocks

19:26

Minerals with Willsey: Olivine, Pyroxene, and Amphibole

10:40

5 Value Gems That You can Easily Find

34:58

The Hidden Truth About Platinum Deposits No One Tells You

18:40

Are these UGLY agates beautiful inside?!

16:04

Identifying Minerals -- Earth Rocks!

21:41

Rock Identification with Willsey: Foliated Metamorphic Rocks - Slate, Phyllite, Schist, and Gneiss

1:24:45

How to Identify a Meteorite ☄️ External Features Explained - What to look for & how formed! Asteroid