The presence or absence of inclusions and/or blemishes on the surface of the Diamond determines the Diamond’s Clarity Grade. Diamonds with the fewest number of inclusions and/or blemishes are rarer, making them more valuable. A Diamond is clarity graded under ten power (10X) magnification and is assigned a grade based on the Gemological Institute of America (GIA) Clarity Grading scale. The Clarity scale is as follows: