Colorless
Near Colorless
Faintly Yellow
D
E
F
G
H
I
J
K
L
Excellent
Very Good
Good
Fair
Poor
FL - Flawless - No internal or external finish flaws
IF - Internally flawless - No internal flaws.
VVS1 - Very, very slightly included - Very difficult to see inclusions under 10x magnification.
VVS2 - Very, very slightly included - Very difficult to see inclusions under 10x magnification.
VS1 - Very slightly included - Difficult to see inclusions under 10x magnification, unable to see inclusion with naked eye.
VS2 - Very slightly included - Difficult to see inclusions under 10x magnification, unable to see inclusion with naked eye.
SI1 - Slightly included - Easy to see inclusions under 10x magnification, may not be able to see inclusions with naked eye.
SI2 - Slightly included - Easy to see inclusions under 10x magnification, may not be able to see inclusions with naked eye.
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