Cleavage and Fracture
10:07
Mineral Habit
22:33
Minerals with Willsey: Mineral Properties
11:32
How To Make Green Gold
26:53
In Search of a Gemstone - Gem Quality Garnets!
16:04
Identifying Minerals -- Earth Rocks!
53:20
Fazendo Ouro Roxo
28:20
Rock Identification with Willsey: Intro to Igneous Rocks!
23:39