What to make of the Sky Diamond?

F Scott Fitzgerald, best known for The Great Gatsby, published a novella in 1922 called The Diamond as Big as the Ritz. It tells the story of a family who own a mountain that is made entirely of diamond, and the lengths they go to in order to protect it. One of the ironies of the story is that while they possess something inordinately valuable, it is only worth anything if diamonds remain rare. If the world knew that there was a mountain-sized diamond out there, the value of all existing diamond...