7:51

21) Sulfate Minerals

17:27

Minerals with Willsey: Hematite, Magnetite, Galena, and Pyrite

31:11

The DEADLIEST Minerals You Never Knew Existed

43:39

33. How to Identify Rocks

9:27

That's how you'll find RUBIES and SAPPHIRES - #crystals #gems

18:22

How to Make Mercury Metal from Cinnabar Ore in Element Series - Episode 7

11:27

18) Metamorphic Silicates

7:53

15) Feldspars and Quartz