I'll do my best to put this convoluted question into words:
Carbon can form lots of different structures, such as graphite and carbon. When these are melted, the bonds between the carbon atoms break. Because these bonds are so strong, the melting points of both graphite and diamond are very high. But what I want to know is that if you were to melt both graphite and diamond, would you end up with the same 'molten carbon'. Also, if you were to allow it to freeze, would it resume the form it held before you melted it, or some different one? Thanks.