The replication of some of the microstructural features encountered in natural composite is another approach to improve the resistance to crack propagation of ceramics . Nacre is a natural material encountered in many seashells' species. It is mainly composed of brittle elements (95vol.% aragonite and 5vol.% organic material) but is characterized by a non-catastrophic failure once the fracture has been initiated. It shows a singular brick-andmortar hierarchical microstructure, with aragonite platelets (of around 10 µm in diameter and 500 nm in thickness) and a polymeric secondary phase between the platelets. This highly anisotropic microstructure leads to crack deflection and energy dissipation during the fracture and leads to macroscopic fracture properties much higher than the properties of its constituents . Many strategies have been reported to obtain materials with brick and mortar microstructures, using different types of bricks (Al2O3, glass, SiC…), different compositions of the mortar (polymer, metal, glass…), as well as a variety of processing routes (tape casting, layer by layer deposition, ice templating, magnetically assisted slip casting, sedimentation) .