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Clarity is one of the essential things in determining the grade of a diamond and of course its price and value as well. A diamond with higher clarity grades is worth more expensive; in fact, the exceedingly rare flawless grading diamond worth the highest value. Lovely reflection is worth high value.

Clarity is one of the four C’s of diamond grading, besides carat, cut and color.

Clarity comes from the word “clear”. Clear means the affordability of a light to transmit through a thing. In this case, if a diamond can structurally transmit and scatter the light in a good way, it means it has good diamond clarity. It is then concluded diamond clarity as a structural grade of diamond’s purity. Often, diamond clarity is equalized to diamond purity.

So…, how can we grade the diamond clarity?

Diamond Clarity relates to the existence and visual appearance of Inclusion and Blemish. Inclusion is an internal characteristic of a diamond, probably having form of structural imperfections such as tiny cracks that can perform whitish or cloudy. The clarity grading is then affected by some factors pertaining to the inclusion: its Number, Size, Color, Relative Location, Orientation, and Visibility. They are observed thoroughly by the expert, called Grader, in a 10x magnification. Grader is human who mediate between buyer and seller. Their report is called “Expert Opinions” and their expertise’s called Gemologist.

Inclusion is simply defined as the imperfection inside a diamond. It could take forms of Carbon, Feather, Crystal, Pinpoint, or Clouds. Carbon means black spots inside a stone. Feather is internal cracking. Crystal denotes white spots inside a stone. Pinpoint is tiny spots which are smaller than a crystal; and Cloud is a group of pinpoint which may give the impression of a single large inclusion.

Blemish could take form of Chip, Fracture, Polishing Lines, Natural, Extra Facet, or Bearding. Chip is a little piece missing cause by wear or cutting process. Fracture is a crack on diamond’s surface. Polishing Lines is a fine lines on the surface caused during the polishing process. Bearding is a very small fracture on the diamond’s edge.

A minor blemish and inclusion do not affect its performance or structural integrity, even in some cases inclusions and blemish can be used as proof of natural origin to distinguish between natural and synthetic diamonds. It’s like a ‘fingerprint’, giving a unique identity.

Some people grade the value of a diamond by the very simple way. They merely judge it by its imperfection appearance. If it looks perfect then it worth good otherwise the contrary does. In fact, a structural grading is defined by the size of clouds inside the diamond since large clouds can influence the diamond’s capability to transmit and scatter light.

Gemological Institute of America (GIA) has defined diamond clarity grading scale comprising six grades and eleven categories. Category F is the clearest diamond and I3 is the worst clear. Here is the scale:

GIA Diamond Clarity Grading Scale

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