So what is so special about a hunk of iron and nickel? Well, once the flaming bits of planet were launched into space by the billion year old collision, they found themselves exposed to the vacuum and extreme cold of outer space. The metal rapidly cooled and formed the fascinating Widmanstätten pattern. This distinctive striations were amed after Alois von Beckh Widmanstätten, the director of the Imperial Porcelain works in Vienna.
So Rolex decided to put this on certain high end model watch dials.