Diamond Education

Diamond Clarity

Diamond formation are processes that occur deep within the earth, particularly under extreme heat and pressure, they usually contain unique birthmarks, which could be internal (inclusions) or external (blemishes). Diamond blemishes are defined as the level of imperfection of a diamond that occurs during the diamond crystallization period within the earth. The diamond clarity chart involves the determination of the number, size, relief, nature, and position of these characteristics, as well as how they affect the overall appearance of the stone. Though no diamond is perfectly pure, the closer it is to perfection, the higher its value.

There are various diamond ways for recognizing high clarity grade diamonds, the CIBJO diamond grading scales, AGS diamond grading scales, IDC diamond clarity grading scales, EGL diamond clarity grading scales. The clarity of grading diamonds depends on these diamond grading considerations.

Employing the aid of GIA International Diamond Grading System, diamonds clarity grading considerations are assigned based on clarity grade that ranges from flawless (FL) to diamonds with obvious inclusions (I3).

The GIA Diamond Clarity Scale has 6 categories, some of which are subdivided to make a total of 11 specific grades.

The FL Grade (Flawless)

The term FL or flawless is used to classify diamonds in which a qualified observer, under favorable lighting conditions, cannot find internal characteristics and/or faults by thorough examination with a 10X loupe.

The IF Grade (Internally Flawless)

A diamond which has no internal characteristics but which, due to minor finish faults, is not flawless and therefore cannot be designated FL or flawless, may be called IF or internally flawless provided the finish faults are so minute that they can be removed by a gentle polishing with only an insignificant loss of weight.

The VVS Grades (Very, Very Small Inclusions)

The term VVS is used for diamonds with internal characteristics very, very difficult for a qualified observer to find under observation conditions as described.  Inclusions are difficult for even a skilled grader to see under clarity of diamonds under 10× magnification. Further, there may only be insignificant finish faults.

The VS Grades (Very Small Inclusions)

The term VS is used for diamonds in which it is difficult for a qualified observer, under observation conditions as described, to find either a few somewhat larger internal characteristics or several very small ones.

The SI Grades (Small Inclusions)

The term SI is used for diamonds in which a qualified observer may, without difficulty, under observation conditions as described, find internal characteristics. Further, there may only occur single finish faults of an insignificant kind.

The I Grades (Imperfect)

The term I or imperfect is used for diamonds in which a qualified observer, with the naked eye, can see internal characteristics and/or in which such major faults occur, which substantially reduce the value of the stone.