The 5C's

 

 

Clarity

The clarity of a diamond refers to how clear, or "clean" the diamond is. The more "clean" the diamond, the higher the price. Most diamonds have "imperfections" in them. The clarity scale is a measure of the severity of those imperfections or "inclusions" as it is known in the trade.

For example, a deep break in a diamond which is not that visible when you look at the stone face-up, could sometimes have a greater impact on the clarity of a stone, than a small black crystal which you can see very clearly face-up.

The following is a Diamond clarity-scale:

 

FL       IF VVS1       VVS2 VS1       VS2 SI1       SI2   I1     I2     I3  

 

FL

IF

VVS1

VVS2

VS1

VS2

SI1

SI2

I1

I2

I3

Flawless-
Internally Flawless

Very Very Slightly Imperfect

Very Slightly Imperfect

Slightly Imperfect

Imperfect

 

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.


How much does "clarity" affect cost?

The effect of all the different properties of Diamond on Cost is discussed in more detail in the Cost section. For clarity, let's take a typical Diamond for an example, and see what happens when we take it through different clarity grades.

Let's start with a 1.00 carat Diamond of G color and SI1 Clarity. If you move up to a VS1, you will pay approximately an extra $1000 per carat. Move up to VVS1, the increase will be approximately $700 per carat. Improve the clarity to IF and the increase will be approximately $700 per carat.

 

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