The biggest ever diamond has been found floating in space. The gem, estimated at close to 10 billion trillion trillion carats, is at the core of a dead star (BPM 37093) – a crystallised white dwarf.

The newly-discovered diamond in the sky is a whopping great chunk of crystallised carbon 50 light-years from the Earth in the constellation Centaurus. It is 2,500 miles across (the moon is approximately 2,200 miles across) and weighs 5 million trillion trillion pounds….. Diamond specialists told the research team that if nothing else, the diamond was much too big to wear.

Moon-sized Diamond Found in Space – via The Register