The people in these stories don’t buy diamond for their mechanical properties or bore tunnels, so everything surrounding the diamond itself is what matters.

How it was mined, where it came from, which company sells it and how all of that is marketed to the world (not even really to the owner) is the value of all of this.

It’s like sending a unicef postcard, what matters the most would be the effect on the receiver and how the sender feels about it. The object itself isn’t on the front stage.