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Glittering Stones » Diamond 4 C's » Clarity » GIA Diamond Clarity Grading Scale
GIA Diamond Clarity Grading Scale
GIA Diamond Clarity Grading Scale
| Category |
Flawless |
Internally Flawless |
Very Very Slightly Included |
Very Slightly Included |
Slightly Included |
Included |
| Grade |
FL |
IF |
VVS1 |
VVS2 |
VS1 |
VS2 |
SI1 |
SI2 |
I1 |
I2 |
I3 |
Flawless (FL)
No inclusions or blemishes visible to skilled grader using 10 x magnification
Internally Flawless (IF)
No inclusions and only blemishes visible to skilled grader using 10 x magnification
Very, Very Slightly Included (VVS1 and VVS2)
Inclusions are difficult for skilled grader to see under 10 x magnification
Very Slightly Included (VS1 and VS2)
Inclusions are clearly visible under 10 x magnification, but can be characterized as minor
Slightly Included (SI1 and SI2)
inclusions are noticeable to skilled grader using 10 x magnification
Included (I1, I2, and I3)
Inclusions are obvious under 10 x magnification and it may affect transparency and brilliance
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