Diamond Clarity

Diamond Clarity

Clarity is determined by the type, size, number, position, and contrast of inclusions. Contrast is important, because dark inclusions in a diamond are more visible and therefore more distracting from a diamond's beauty than white or gray inclusions. Plus, if an inclusion is positioned in just the wrong spot, it can be reflected within the stone multiple times, making the diamond appear even less attractive and negatively affecting its clarity even more. Inclusions occur within the stone, while blemishes are external in nature. There are many grading scales used to describe diamond clarity; however, the diamond grading scale used by the Gemological Institute of America (GIA) is probably the most well known. The scale can be broken down as follows:
Flawless (no inclusions under 10x loupe)
IF (internally flawless, surface blemishes exist)
VVS 1, 2 (very, very slightly included: minute inclusions)
VS 1, 2 (very slightly included: minor inclusions)
SI 1, 2 (slightly included: noticeable inclusions)
I  1, 2, 3 (included: observable inclusions)
Diamond grading should always be performed with a 10-power (10x) loupe or microscope under proper lighting by a trained gemologist. Inclusions in stones graded I1, I2, and I3 can be seen by the unaided eye.
Note: In some cases the term "imperfect" will be substituted for "included" when describing VVS, VS, and SI stones. Diamonds in the I range are also sometimes referred to as imperfect 1, 2, or 3.

HomeHome