pls tell me , whether carbon is a conductore of semiconductor , insulator

@ utkarsh 
carbon have many crystallisation form , and so, called as elemental form . so, we cannot define carbon as an insulator , conducter or semiconducter . 
in certain condition semiconducter acts like a conducter as in room temperature , the electrons will be transferred from valence band to the conduction band . 
CHARCOAL and GRAPHITE , which are allotropes of carbon are acting like that of a conducter and it have capability to transfer electric charges between them . 
whereas diamond have a diffrent crystal structure and act as a insulator . 
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