You might be right... pressure needed for diamond synthesis is almost certainly much higher than for killing bacteria via pressure drop. Turns out, it is, and

You might be right... pressure needed for diamond synthesis is almost certainly much higher than for killing bacteria via pressure drop. Turns out, it is, and they add temperature to the mix: >They were able to heat carbon to about 3,000 °C (5,430 °F) under a pressure of 3.5 gigapascals (510,000 psi) for a few seconds.