Talking about being expensive,then it has to be Goldvish.A PR stunt it may be, and they surely canâ€™t be expecting to sell any, but the Goldvish â€œLe millionâ€ is officially the most expensive mobile phone in the world, according the Guiness Books of Records. Thereâ€™s even been talk of a $1.3million phone, but this has fewer diamonds than the Goldvish so I canâ€™t see where the extra expense comes from! The â€œLe millionâ€ is a one off, featuring a blinding 120 carats worth of VVS-1 grade diamonds, according to designer Emmanuel Gueit. If $1 million is out of your price range. the Geneva-based Goldvish also offer several other diamond-encrusted 18k gold models in your choice of rose, yellow, or white, starting at a much more reasonable $25,600 (Â£13,837).Way to go Goldvish.