The king of mobile accessories is also the world's most expensive phone. For $15.3 million, this lavish and decadent iPhone is 24 carats of solid gold, and it has a black single deep-cut 26-carat diamond, which replaces the home button. It takes nine weeks to complete the phone by hand. Uniquely designed and crafted by Stuart Hughes, this fine piece is decorated with 600 white flawless diamonds around the framework and a sapphire glass set in the screen. The Apple logo on the back of the phone also includes 53 diamonds. For those who can't afford the steep price tag, a $4,000 24-carat gold iPhone 5 (pictured) is available.