Treasures of the Earth: Gems Nova Documentary

https://www.youtube.com/watch?v=l65FKaeus_E

BBC, Documentary Treasures, Gems #BBC 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?

Metals What is it about the nature of metals that have made them a pillar of human .