Flawless (FL) No internal or external imperfections on or in the diamond. Extraordinarily rare.
Internally Flawless (IF) – No internal imperfections found within the diamond. This level of rating is very rare.
Very, Very Slightly Included (VVS1 / VVS2) – It will be very difficult to see imperfections without the help of at least 10x magnification
of a scope. This is an extremely high diamond quality.
Very Slightly Included (VS1 / VS2) – A diamond that is graded VS2 or VS1 are generally not visible to the eye without some kind of magnification.
Slightly Included (SI1 / SI2) – At this level of clarity the diamond’s imperfections are visible without 10x magnification. In some cases
they are visible to the naked eye depending on placement & size. The greatest price drop occurs between SI1 to the VS range of clarity.
Included (I1) – Included diamonds will have inclusions visible to the naked eye oftentimes.