According to the internal and external filling characteristics and the shape of the secondary glass of rubies observed by the microscope, combined with the luminous phenomena of the basal plane of ruby and secondary vitreous body revealed by Diamond View^TM, the "quantity" of the filled glassy material in ruby can be judged. Filled ruby can be divided into three grades of "slight filling", "moderate filling" and "significant filling" and the author suggests that the corresponding names should be ruby with visible slight filling phenomenon, ruby with visible moderate filling phenomenon and ruby of filling treatment.