Clarity is an important aspect of a diamond,
and it is important to know how to grade the
clarity of a diamond before you buy one. It is
actually quite easy to learn how to grade the
clarity of a diamond. There are basically two
things that you must understand: Diamonds
with visual inclusions and blemishes, and
those that are 'eye clean' meaning that there
are no inclusions or blemishes that can be
seen with the naked eye. From there, the
clarity of a diamond is further broken down
into subcategories.

Many people mistakenly think that diamond
clarity refers to how clear it is. This isn't so.
Clarity actually refers to the internal and
external imperfections of the diamond. The
best diamonds, of course get a grade of FL
or IF – Flawless or Internally Flawless –
meaning that it is perfect. A grade of I-1, I-2
or I-3 means that the diamond is imperfect,
with a grade of I-3 being the worst.

Other grades are VVS1 and VVS2, which
means that the diamond is very, very slightly
imperfect; VS1 and VS2, meaning the
diamond is very slightly imperfect; SI-1 and
SI-2, which means that the diamond is
slightly imperfect.