FL(Flawless) = Absence of internal and external defects with an enlargement of 10 times.
IF(internally Flawless) = Absence of inclusions with an enlargement of 10 times, (Loupe Clean LC).
VVS(very, very small inclusion) = Very small inclusion not easily visible with the magnifying glass 10x.
VVS2(very, very small inclusions) = Little very small inclusion difficult to find with the magnifying glass 10x.
VS(very small inclusions) = Very little small inclusion not easily visible with the magnifying glass 10x.
VS2(very small inclusions) = Very small inclusion not easily visible with the magnifying glass 10x.
SI(small inclusions) = Several small easily recognizable inclusion with the magnifying glass 10x, not affecting the brightness.
P1(1st Pique) = Inclusion very easily visible with the magnifying glass 10x, not affecting the brightness.
P2(2nd Pique) = Great and/or many inclusion easily visible with the naked eye, affecting the brightness slightly.
P3(3rd Pique) = Great and/or many inclusion very easily visible with the naked eye, affecting the brightness.