ebda5082_larity_Chart___The_Diamond_Pro__Description
[Clarity Grade] VS1 [Description] 
Very Slightly Included (1st Degree) – VS1 diamond clarity inclusions are just barely visible under 10x magnification (standard jeweler’s loupe). When looking for VS1 clarity inclusions with a loupe, it can sometimes take a good few seconds until the pinpoint is located. Unlike VVS2 clarity inclusions, a microscope is never needed to locate a VS1. As you can see on the sample diamond to the right, a VS1 clarity inclusion is still quite small and will never be visible to the naked eye. If you have trouble seeing the inclusion in small sample picture to the right, click on the photo to enlarge it.
Diamond Clarity Chart @ The Diamond Pro
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