11:49

24) Native Element Minerals Pt. 1

11:27

18) Metamorphic Silicates

10:14

22) Sulfide Minerals

29:18

Mining topaz and aquamarine and building a mountain road | Mt. Antero Treasures S4:E1

9:19

Mineral Groups

7:38

20) Oxide Minerals

7:51

21) Sulfate Minerals

7:08

Incredible Gem Hoards | A Look Inside Private Collections