Complex sentence: Lonsdaleite is simulated to be 58% harder than diamond and to resist indentation pressures of 152 GPa, whereas diamond would break at 97 GPa.
Split into simpler sentences: Lonsdaleite is simulated to be 58% harder than diamond. The resulting material is calculated to resist indentation pressures of 152 GPa, much higher than diamond, which under the same conditions will break at 97 GPa.