Some in the diamond industry disagree on which diamonds should receive the "Hearts and Arrows" label. Because there used to be no industry standard, one person or company may say a diamond is a Hearts and Arrows diamond while another may say it is not. In the industry, the term "super ideal" is a common term that is coined and used to describe diamonds displaying perfect optical symmetry. Most diamonds with an overall cut graded by GIA as "Excellent" (with Excellent symmetry as well) or American Gem Society as "0" (or "Ideal") will have some sort of hearts and arrows pattern when seen through a viewer, although the pattern may not be perfect. Many within the diamond industry believe the Hearts and Arrows pattern should be graded, and only those with the top grade should be called Hearts and Arrows. Those people believe that the mere presence of a Hearts and Arrows pattern is not sufficient to be considered a Hearts and Arrows diamond; the pattern must be perfect to fit within certain guidelines.