Which clarity factor usually has the greatest influence on the clarity grade?

• A. The weight
• B. The symmetry
• C. Large inclusions
• D. High fluorescence

Answer: (C)

Clarity grade hinges on how visible internal features are under 10× magnification and to the naked eye. The most noticeable feature tends to set the grade, because it dominates what an observer will see in normal viewing. Large inclusions are the feature that most often controls this visibility, so they typically have the greatest influence on the final clarity grade. Carat weight is about size, not flaw visibility; symmetry affects cut quality rather than internal flaws; fluorescence can influence appearance in some lighting but usually doesn’t determine the clarity grade unless it dramatically changes how flaws are perceived. So, large inclusions are the factor that most strongly shape the clarity grade.