Jean Cocteau

The price of diamonds can vary greatly depending on size, cut, color, and other factors, including whether they have a history. But because of the rarity of blue boron diamonds, they often fetch more money than gems of similar quality.

As the financial experts all over the world use machines to unwind Gordian knots of financial arrangements so complex that only machines can make - 'derive' - and trade them, we have to wonder: Are we living in a bad sci-fi movie? Is the Matrix made of credit default swaps?