The element carbon has been used as a source of energy for the past few hundred years,
and now in this era of technology, carbon has played a significant and very prominent role
in almost all fields of science and technology. So as an honour to this marvellous element,
we humans should know about its various forms of existence. In this review article, we
shed light on all possible carbon-allotropes; similarities in their synthesis techniques and the
starting materials; their wide range of possible availability; and finally, future perspectives
and applications. A brief introduction is given on the types, structures, and shapes of the allotropes
of carbon for a better understanding.