The seven most expensive smartphones in the world

They bring luxury to your fingertips – and you really wouldn't want to accidentally drop one of these mobile phones on to a hard surface.

Handsets made out of gold and platinum, boasting everything from diamonds to 200-year-old African Blackwood, can cost up to £10m. They are generally made in very limited runs, for obvious reasons.

So here they are – the five most expensive phones on the market:

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1: iPhone 5 Black Diamond

An unnamed Chinese businessman splashed out on this £10m iPhone, which is made of solid gold and features more than 650 diamonds, including a 26-carat black diamond as the home button. It was created by Stuart Hughes, a British designer.

2: iPhone 4s Elite Gold

Is £10m too pricey for you? Well, perhaps this one will be more within your range. For a mere £6m, you can have a phone boasting 500 diamonds, a 24 carat gold logo and a compartment including, it claims, pieces of Tyrannosaurus Rex bone. Who hasn't wished for such a feature?

3: Supreme Goldstriker iPhone 3G 32GB

As well as the popular use of diamonds and gold, this baby has a chest carved from a block of granite and boasts Kashmir gold with an interior lining made of nubuck top-grain leather. It costs around £2.6m.

4: GoldVish Le Million

Despite being designed 11 years ago, this striking, gaudy handset (pictured above) is still worth more than £1m. On launch, it earned a mention in the Guinness Book of World Records and production was limited to just three models. It has a solid gold body littered with diamonds – natch.

5: Diamond Crypto Smartphone

Designed by luxury accessories-maker Peter Aloisson, this handset includes "powerful encryption technology", which its manufacturers say protects against kidnapping and technological blackmail. It also features rose gold and includes 50 diamonds, a fifth of which are rare blue diamonds.

6: Gresso Luxor Las Vegas Jackpot

Exactly the sort of gadget to flash around as you stroll around casinos of Sin City, this £800,000 model's body is based on 200-year-old African Blackwood, although it also features diamonds aplenty. Its keyboard is made from 17 laser-etched sapphires and the overall effect is less gaudy than some of its elite stablemates. Launched in 2010, only three units were produced, each with a personal number engraved on its back. It oozes quality but in a slightly more understated, masculine manner.

7: Vertu Signature Cobra

Do you sometimes find yourself worrying at night that your phone lacks a certain something? A ruby, perhaps? How about 439 rubies? Well, if that's exactly what you've always been looking for, this snake-like handset is for you. Circled by a cut diamond cobra, it has two emerald eyes. French jeweller Boucheron made it in a limited run of eight units and all they want from you in return is £250,000. Temptress snakes have got a bad press in foundational literature; will this one tickle your fancy?