We've already established that if you're filthy rich, you probably don't want the same cell phone as common folk. No, if you're looking for something higher end, you'll probably end up talking to Stuart Hughes, who customizes electronics by plating them in gold and diamonds. We've already seen his work on a $20,000 iPhone 4, but his latest achievement is downright ridiculous. Called the "world's most expensive phone" (we'll see how long that lasts), Hughes made two identical models for an Australian client. Each handset includes over 500 diamonds and totals over 100 karats, and comes in its own special granite box. Its total cost is £5 million -- nearly 8 million dollars. Just don't bother crying when you leave it on the seat of a cab.