Interestingly and in contraposition to what observed in the bulk supercrystal, the multihierarchical composites' decrease in stiffness and hardness stops after 2 µm depth. This is attributed to a hampered crack propagation and therefore significant increase in the toughness of the material. Note that the maximum indentation depth was not the same for all samples due to setup limitations in regard of the applied load (see SI Ch. 4.1).