iPhone 3GS Supreme Rose by Stuart Hughes
Price: $2.97 million*
Stuart Hughes—who also designed the most expensive television—made headlines in 2009 when he crafted a 22-carat gold iPhone studded with 53 diamonds for an unnamed Australian businessman for £1.92 million. More recently, he says, he was commissioned to make an even pricier version of the phone in 18-carat rose gold with hundreds of diamonds, including a single-cut, 7.1-carat diamond for the main navigation button.