As a case study on the interconnectedness between solid state and molecular chemistry regarding carbon, we have shown recently that the rarely occurring tricarbon C 3 molecule can be a building block of 3D covalent ultra-hard carbon networks, with carbon showing two hybridizations types: linear-and tetrahedral-like . Earlier, Bucknum and Hoffman in 1994 conceived a dense hexacarbon tetragonal structure with linear C=C (sp 2 ) and tetrahedral C(sp 3 ) based on 1,4 cyclohexadiene. Such molecule depicted in Fig. is used as an effective hydrogen donor for catalytic hydrogenation reactions. Whereas in benzene there are alternating double and single bonds between the six carbon atoms (Kekulé formulation) in two resonant formulaes, 1,4-cyclohexadiene shows a localization of two C=C double bonds. The corresponding 3D (D = dimension) structure called "glitter" i.e., shining due to the conductive character of the electronic structure as shown in the development of this work (cf. Figure ). The crystal structure featuring a C6 hexahedron is shown in Fig. . It consists of two types of carbons labeled C1 (tetrahedral) and trigonal C2, letting express the chemical formula as C1 2 C2 4 .