(a) It is unfair or deceptive to use the word ``flawless'' to describe any diamond that discloses flaws, cracks, inclusions, carbon spots, clouds, internal lasering, or other blemishes or imperfections of any sort when examined under a corrected magnifier at 10-power, with adequate illumination, by a person skilled in diamond grading.
(b) It is unfair or deceptive to use the word ``perfect,'' or any representation of similar meaning, to describe any diamond unless the diamond meets the definition of ``flawless'' and is not of inferior color or make.
(c) It is unfair or deceptive to use the words ``flawless'' or ``perfect'' to describe a ring or other article of jewelry having a ``flawless'' or ``perfect'' principal diamond or diamonds, and supplementary stones that are not of such quality, unless there is a disclosure that the description applies only to the principal diamond or diamonds.