GIA Diamond Grading Chart

 

 

Clarity

 

IF

VVS1...VVS2

VS1...VS2

SI1...SI2

I1...I2...I3

INTERNALLY FLAWLESS

VERY,VERY SLIGHTLY INCLUDED 1 AND 2

VERY SLIGHTLY INCLUDED 1 AND 2

SLIGHTLY INCLUDED 1 AND 2

INCLUDED 1, 2 AND 3

 

**Clarity refers to the summation of the number, size and placement as well as the nature of inclusions and/or surface irregularities. Flawless stones are diamonds free of inclusions under 10X power. Internally flawless are diamonds without any internal inclusions. VVS1 and VVS2 have extremely small inclusions. VS1 and VS2 possess small inclusions. SI1 and SI2 have inclusions that can be seen easily under 10X power magnification, but are not usually visible to the naked eye. I1, I2, and I3 have large inclusions that are visible to the naked eye.

 

Color

 

D..E..F

G..H..I..J

K..L..M

N..O..P..Q..R

S..T..U..V..W..X..Y..Z

COLORLESS

NEAR COLORLESS

FAINT YELLOW

VERY LIGHT YELLOW

LIGHT YELLOW

 

**Color refers to the absence of color in a diamond. The less yellow within the diamond, the higher on the alphabetical scale the diamond will be graded. Colorless diamonds are D-F, near colorless are G-J, faint yellow are K-M, very light yellow are N-R. S-Z are light yellow.

 

 

***National Gemstone markets diamonds with GIA Grading Reports. The GIA was formed in 1931 and is a non-profit institution. They do not buy/sell or appraise diamonds. They are an educational and research institute. Please note, a diamond graded by a person who graduated from the GIA is not the same as a GIA Grading Report. Do not buy a diamond from anyone who grades and sells it. There is too much temptation to over-grade the diamond. The GIA operates like a neutral intermediary between the buyers and sellers.

 

 

**For more detailed information on Diamonds, please click here: Diamonds & Diamond Grading Chart GIA