Clarity Grading Considerations
All grades reflect the appearance to an experienced grader when viewed from above at 10x magnification, though higher magnifications and viewing from other angles are used during the grading process. The grader studies the diamond for internal characteristics and judges them on the basis of five clarity factors: size, number, position, nature, and color or relief. The clarity grade is assessed on the basis of the most noticeable inclusions, the so-called "grade setting inclusions". Less significant inclusions are ignored for the purposes of setting the grade; however, they may still be plotted onto a diamond plot chart.
Accurate clarity grading as with other grading steps must be done with the diamond "loose" (not set into any mounting). Inclusions are often difficult to see from the crown side of the diamond, and may be concealed by the setting.
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