I guess that is the diamond in question. How finite is the supply of diamonds in the world? Interesting article. I wonder if this is the kind of offense they would execute someone over in countries such as where this happened?
I expect they will execute him, probably in public with a sharp object.
As for diamonds, the supply is intentionally kept low by diamond cartels to keep prices high.
However, with China in Botswana, we may see that change as they try to sell everything they can get their hands on.