Answers

2014-04-23T14:05:30+05:30
Carbon is always black in colour......daimond is the polished form... moreover daimond is a allotrope.... so the differnce in properties is there
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dont forget to mark the best answer
2014-04-23T14:28:11+05:30
Carbon is not "black". Carbon is an element, and a single atom of carbon doesn't have color. 

Carbon bonds in different ways, and depending on how carbon bonds it will appear a different color, as these bonds will absorb and reflect light differently.
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