Slightly Included (SI1) round diamond at 30x magnification – this diamond exhibits a light cleavage in several pavilion facets. The red area encircles the cleavage, which can be seen under the table. This inclusion will not be easily visible to the naked eye. If this inclusion was in a different part of the Diamond Crystal, for example, under the girdle facets close to the girdle and maybe in line with a facet edge, it is possible that the grading would be higher at Vs2