The corresponding structure shown in Fig. consists of four trigonal carbons: C(sp 2 ) and two tetrahedral carbons: C(sp 3 ). The structure was called 'glitter', i.e. shining due to the electronic conductivity. First principles investigations and full characterization of 'glitter' C 6 was recently undertaken, and the structure was used as template to propose novel equiatomic (super)hard SiCN . The established relationship between 'glitter' C 6 and the proposed tetragonal C 6 regarding the structural arrangement allowed us to call it a 'neoglitter'.