Why do diamonds erupt from Earth’s depths? Scientists have the answer

Rare volcanic blasts of kimberlites happen about 25m years after continental plates tear apart, researchers find

Powerful volcanic eruptions that blast diamonds high into the sky and scatter the precious stones across the Earth's surface have long mystified researchers. But now, scientists have worked out what unfolds more than 100 miles underground to propel the crystals upwards with such spectacular force.

The work sheds light on the enigmatic processes that cause the rare eruptions and where diamond-rich deposits are most likely to be found.