Amosu has released video footage of what it says is the world's most expensive BlackBerry - and with a price point of £120,000 - it's almost certainly the case.

The limited edition diamond "Curva" gets 4459 brilliant cut diamonds set in 18 carat gold, as well as a global concierge service for the owner.

Apparently only three Curvas will ever be made, which is arguably three more than the world needs.