GEM CLARITY GUIDE
F and IF
Flawless - Free from all inclusions or blemishes at 10X magnification
IF - Internally Flawless - No inclusions visible at 10x magnification. May have insignificant surface blemishes
VVS 1 and VVS II
Very, very slight inclusions- Inclusions are very hard to spot at 10X magnification. Eye clean.
VVS2 - Very, very slight inclusions- Can spot minor insignificant inclusions at 10X magnification. Mostly eye clean
VS 1 and VS 2
Very slight inclusions- It maybe possible to spot Inclusions at 10X magnification. Inclusions can be considered as minor and may be able to be visible by the naked eye.
SI 1 and SI 2
Slight inclusions- Minor inclusions can be spotted with the naked eye.
I1, I2, or I3
Included - Grades I1 through to I3 could have noticeable inclusions obvious to the naked eye with I3 having major inclusions.