[en] At growing of sapphire without the concentration cooling of fusion concentration of the appearing adsorbed molecules CO is increased to the maximum and the selection from the sapphire of atoms of carbon is stopped. At the concentration cooling of fusion of molecule of CO diffusion in deepening between cells, where no isomer pores appear. In the process of growing they will be transformed in spherical. It is shown, that the sapphire grown after the concentration cooling of fusion inherits the crystallography orientation of initial crystal. It is offered from the raw material cleared from a carbon, to grow a sapphire at the concentration cooling of fusion.