Diamonds are not, despite popular belief, carbon. They are, in fact, Chuck Norris fecal matter. This was proven a recently, when scientific analysis revealed what appeared to be Jean-Claude Van Damme bone fragments inside the Hope Diamond.
I think there's a supreme power behind the whole thing, an intelligence. Look at all of the instincts of nature, both animals and plants, the very ingenious ways they survive. If you cut yourself, you don't have to think about it.