Internally Flawless does not have inclusions when examined by an experienced gemologist using 10 times magnification loupe, but will have insignificant blemishes.
Very, Very Slightly Included 1 - contains minute inclusions that is almost impossible to detect by experienced graders to under a 10 times magnification.
Very, Very Slightly Included 2 - contains a few more minute inclusions compared to a VVS1 but is still almost impossible to detect by an experienced grader under a 10 times magnification.
Very Slightly Included 1 - contains small inclusions such as tiny crystals, clouds or feathers when examined closely under a 10 times loupe.
Very Slightly Included 2 - just like the VS1, this contains small inclusions such as tiny crystals, clouds or feathers but slightly noticeable when examined very closely under a 10 times loupe.
Slightly Included 1 - has inclusions such as knots, clouds, crystals, feathers and cavities that are noticeable to an experienced grader under 10 times loupe.
Slightly Included 2 - this has inclusions such as knots, clouds, crystals, feathers and cavities that are more noticeable from an SI1 by an experienced grader under 10 times loupe.
Slightly Included 3 - this has inclusions such as knots, clouds, crystals, feathers and cavities that are more noticeable from an SI2 clarity stones by an experienced grader under 10 times loupe.
Included 1 - this contains inclusions such as large feathers or large included crystals that are obvious under 10 times magnification, which could affect the brilliance of a diamond.
Included 2 - a grade in between I1 and I3 that contains inclusions such as large feathers or large included crystals that could be seen by the naked eye, which could affect the brilliance of a diamond.
Included 3 - this contains inclusions such as large feathers or large included crystals that could be seen by the naked eye, which could affect the brilliance of a diamond.