Almost all diamonds have tiny imperfections. Diamonds
with few or no imperfections receive the highest clarity grades.

FL-IF Flawless, Internally Flawless: This is a very rare grade
of diamonds; they have no internal or external imperfections.

VVS1-VVS2 Very Very Slightly Included: An excellent quality
diamond, it is difficult to see the imperfections under 10x magnification.

VS1-VS2 Very Slightly Included: Imperfections are not visible to the
unaided eye, an excellent quality diamond.

SI1-SI2 Slightly Included: A good value diamond, imperfections are
noticeable under 10 x magnification and may be visible to the unaided eye.

I1 Included: This grade of diamonds have minor inclusions that may be
visible to the unaided eye.

I2-I3 Included: Inclusions are noticeably visible to the unaided eye.