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The problem of using diamond as a dielectric in the devices of microcircuits is an insufficient resolution of optical devices for controlling the light refraction coefficient, respectively, the dielectric permeability . In the work a fragment of a c-C monocrystal sample (a diamond variety) has been investigated. The dielectric permeability has been determined at the level of a spatial cell, which is presented in the hexagon anamorphous. This is a hexagonal prism with the base planes in the form of hexagons, in the center and in the angles of which the carbon atoms are arranged. The value  has been determined by the interaction of charges of central atoms in the base planes of the prism and bond electrons. This value has been calculated with accuracy up to the 7-th symbol after decimal point and can be used for practical purposes.

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Cubic carbon c -C (diamond variety) is promising for use as a dielectric. The obstructing factors in the c -C application in microelectronics are the extreme conditions of its formation - pressure and high temperature, which are inadmissibly far from those applied in production. During the c -C synthesis the external pressure applied to raw material, and essentially bringing closer the carbon atoms and the transformation of their electronic cells, occur before the moment of formation of molecular bonds. The parameters of this transformation structure are fixed in a crystal grid as a reflection of the outwardly compression force and electric (pushing apart) force - of electrons located on orbitals of atoms. In the paper the construction of the c -C space cell (hexagonal prism) with elliptic orbitals of the bond of carbon atoms has been presented, the interaction of charges - the participants of the orbital formation - has been described. One of bonds for the purpose of assessment of the pressure value, necessary for bringing closer the reacting atoms in formation of this bond has been calculated. It has been shown that at the moment of bringing closer the carbon atoms, at which the balance of electric forces (these forces push apartt atoms) and compression forces and, also, of the outwardly force, the bond formation is possible.

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