Duration: 1H 11M 36S Likes: 2692 DisLikes: 265 Rating: 9.1 / 10
Views: 663285 Description: BBC, Documentary Treasures, Gems #BBC #clinton Treasures of the Earth: Gems What processes in the depths of the Earth forge beautiful and precious .
What processes in the depths of the Earth forge beautiful and precious stones? Airing November 2, 2016 at 9 pm on PBS NOVA Facebook: .
BBC, Documentary Treasures, Metals #PBS #Nova Treasures of the Earth: Metals What is it about the nature of metals that have made them a pillar of human .
Airs on Wednesday, November 2nd at 9 p.m. on PBS 6.....
