Diamonds are big business regardless of what the current economic situation is, and here’s a novel way to know whether you’re dealing with a fake gem the next time you get involved in a rock hard deal. The DiamondNite Diamond Moissanite Tester is tipped to tell the difference between synthetic diamonds and real diamonds within a mere 1.5 seconds. No idea just how effective this is, but at least the folks at De Beers will definitely sit up and take notice of such a device that’s in the market as the battle between synthetic and real diamond manufacturers rages on. Hopefully your girlfriend or wife won’t procure one and discover that you’ve been a cheapskate all the while declaring otherwise.