Illegal Business of Green Emeralds: Inside the Underground Black Market | ENDEVR Documentary
49:34
How People Risk Their Lives Hunting For Gems, Pearls, and Gold | Risky Business
52:51
Nigeria: La guerra del petróleo SIN CENSURA
52:24
El negocio del diamante | Documental en español
43:27
The Secret World of Gold (2013) | Full Documentary | Ann-Marie MacDonald
45:15