Ametrine from Bolivia documentary of Patrick Voillot
0:39
Testing Rough DIAMONDS
6:21
La Kornerupine
15:56
Taux de change élevés pour l'or sur Wolf Creek
52:27
The Emerald of Colombia documentary of Patrick Voillot
20:03
Vietnam Unearthed: Ruby, Spinel, Sapphire and more, explore gemstones and gem mining in Luc Yen.
5:04
This Lost Language Remained Hidden For 4000 Years
1:01:00
Splendid Stones - National Geographic
6:15