Designer Alexander Amosu has had a long history of covering BlackBerrys with all manner of rare antiquities. This new project, however, may take the diamond-encrusted cake. He has formally announced the creation of the world’s most expensive diamond-encrusted BlackBerry. This magnificent beast, shown above, is crafted in solid 18 carat yellow gold and encrusted with 4,459 brilliant cut diamonds (weighing 28.43 carats). The handset is personalized with your name or company logo and comes with a 24-hour global concierge service. Amosu says only three will be made, so you had better get on it .The price tag? A paltry $200,366!