According to a report by the Antwerp Facets News Service, astronomers at Harvard University have discovered what they claim as the largest diamond till date ever to be found, over and above what exists on earth. The diamond is the planet called 'Lucy', which is 50 light years from the Earth. This diamond planet weighs at least 10 billion trillion trillion carats and is the remianing hot core of an extinct star. The astronomers explained that Lucy is a crystallised white dwarf. They also claim that within five billion years, the Sun will also die and turn into a similar diamond in the solar system.