Sri Lanka's Lucrative Gem Mines (2002)
29:19
Gem Adventures: Sri Lanka
14:11
Inside Africa's Food Forest Mega-Project
46:36
Hunting Down A Royal Blue Sapphire: Inside The Gem Trade | In Search Of Precious Stones | Ep 3/4
12:59
Inside Sri Lanka’s Deadly Underground Mines Filled With Rare Jewels | Risky Business | Insider
13:42
Who Built These Ancient Skyscrapers?
12:32
Welcome To Ruby Land: Exploring the Gemstones of Burma (Myanmar)
26:56
GRS Gemresearch Documentary: The Mozambique Ruby Collection - A Lifetime Experience
8:27