|
The following is
the GIA Diamond clarity-scale:
FL, IF, VVS1, VVS2,
VS1, VS2, SI1, SI2, SI3, I1, I2, I3
FL-Flawless
These stones
have no imperfections inside or on the outside of the
stone under the magnification of a loupe of 10 power.
IF-Internally Flawless
These stones
have no inclusions under a loupe with a 10 power
magnification.
VVS1,VVS2-Very
Very Slightly Imperfect
These stones
have very small inclusions which are very difficult to
see under a loupe with a 10 power magnification.
VS1,VS2-Very
Slightly Imperfect
These stones
have small inclusions which are slightly difficult to
difficult to see under a loupe with a 10 power
magnification.
SI1,SI2-Slightly
Imperfect
These stones
have inclusions which are fairly easy to see under a
loupe with a 10 power magnification, or visible to the
naked eye.
I1,I2,I3-Imperfect
These stones
have inclusions which range from eye visible to very
easily seen to the naked eye.
|
Clarity |
FL
|
IF
|
VVS1
|
VVS2
|
VS1
|
VS2
|
SI1
|
SI2
|
I1
|
I2
|
I3
|
|
Scale |
Flawless-
Internally Flawless
|
Very Very
Slightly Imperfect
|
Very Slightly
Imperfect |
Slightly Imperfect
|
Imperfect |
SI3
Outside of the
GIA Diamond clarity scale is a grade you may have seen
called
SI3.
The Rap Sheet, which is a Trade Publication, honors the
SI3 grade which is given out by EGL, the European
Gemological Laboratory. It is described as a split
between the SI2 and I1 clarity grade. |
