Following Gondwana breakup, there was a period of unique igneous activity.
This formed numerous volcanoes of kimberlite rock, commonly known to contain
Unfortunately, the kimberlite pipes of KwaZulu-Natal have not
yielded any significant diamonds. This is due to the kimberlites having
originated from beneath the Natal Metamorphic Province. Carbon crystallises
to form diamond under high pressure and low temperature - conditions only
found beneath the Kaapvaal Craton, such as in northern Lesotho.