5 C’s & More --- Clarity

Clarity refers to the extent of birthmarks or "inclusions" in the diamond. Most inclusions are not visible to the naked eye and can be viewed through a 10X magnification device.Inclusions interfere with the dispersion of light and affect a diamond's brilliance. With fewer and slighter inclusions, the stone is both rarer and more valuable.

Clarity is graded on a scale that ranges from internally flawless (IF), very very small inclusions (VVS1-VVS2), very small inclusions (VS1-VS2), small inclusions (SI1-SI2) to imperfect (I1-I2-I3) with obvious visible inclusions.