Question

would a low or a high temperature favor the conversion of graphite into diamond?

Answer 1

For graphite to be converted to diamond, high temperatures and high pressures are required. This process is an energy demanding one. This is because the energy is used to overcome the bonding structure in graphite from a three bond structure to the diamond's four bond structure. This change in the electron arrangement of the compound is reason why this process is quite energy intensive and not easy to practice.