(FL) FLAWLESS
Shows no inclusions or blemishes of any sort under 10X magnification when observed by an experienced grader.

(IF) INTERNALLY FLAWLESS
Has no inclusions when examined by an experienced grader using 10X magnification, but will have some minor blemishes.

(VVS1 and VVS2) VERY VERY SLIGHTLY INCLUDED
Contains minute inclusions that are difficult even for experienced graders to see under 10X magnification.

(VS1 and VS2) VERY SLIGHTLY INCLUDED
Contains minute inclusions such as small crystals, clouds, or feathers when observed with effort under 10X magnification.

(SI1 and SI2) SLIGHTLY INCLUDED
Contains inclusions (clouds, included crystals, knots, cavities, and feathers) that are noticeable to an experienced grader under 10X magnification.

(I1, I2, I3) INCLUDED
Contains inclusions (possibly large feathers or large included crystals) that are obvious under 10X magnification and may affect transparency and brilliance.

Smith Jewelers sells only Diamonds SI1 clarity and H color or better.