Uncut diamond weighs in at 404 carats compared with Kohinoor’s 105.602 caratsEven as the governments of India, Pakistan and even Afghanistan have all laid a claim on the world-famous Kohinoor diamond that is set in the front of UK’s Queen Mother’s Crown, it is Dubai that can be called home to one of the world’s rarest and largest rough diamonds even discovered. The astonishing rough diamond in Dubai is characterised not only by its sheer size – an impressive 404 carats – but also uniquely by its colourlessness and flawless clarity. The cut-down Kohinoor, on the other hand, weighs 105.6...