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Diamond Clarity



The Diamond Clarity Grading System was developed by GIA (Gemological Institute of America) in 1953 and is now the common international language when we talk about diamond clarity.

The following is from GIA's website and their definition of diamond clarity-

Diamonds have internal features, called inclusions, and surface irregularities, called blemishes. Together, they're called clarity characteristics. A diamond clarity grade is determined by the relative absence of clarity characteristics.


Flawless (FL): no blemishes or inclusions when examined by a skilled grader under 10X magnification.

Internally Flawless (IF): no inclusions when examined by a skilled grader, and only insignificant blemishes under 10X.

Very Very Slightly Included (VVS1 and VVS2): contain minute inclusions that are difficult for even a skilled grader to locate under 10X. VVS1: extremely difficult to see, visible only from the pavilion or small and shallow enough to be removed by minor repolishing. VVS2: very difficult to see.

Very Slightly Included (VS1 and VS2): contain minor inclusions ranging from difficult (VS1) to somewhat easy (VS2) for a trained grader to see under 10X.

Slightly Included (SI1 and SI2): contain noticeable inclusions which are easy (SI1) or very easy (SI2) to see under 10X. In some SIs, inclusions can be seen with the unaided eye.

Included (I1, I2, I3): contain inclusions which are obvious to a trained grader under 10X, can often be easily seen face-up with the unaided eye, seriously affect the stone's potential durability, or are so numerous they affect transparency and brilliance.


diamond clarity chart





- Important Take Away Points -
Diamond Clarity


#1- Diamond Clarity grades from FL to SI1 should look the same.... they should not have any inclusions that are noticeable to your eye, you will need 10X magnification.... unless of course you were Superman!
But then again, he doesn't care about Diamond Clarity because he can make Flawless diamonds all day long out of lumps of coal!


#2- Higher Diamond Clarity does not equal a more beautiful diamond! The true beauty of the diamond is released by how the diamond has been cut. I have seen some absolutely beautiful well cut diamonds with a diamond clarity grade of I1 and some lifeless, poorly cut, diamonds that had a diamond clarity of VVS1.


#3- Diamond Clarity is a scale with very tight categories at the top (FL,IF,VVS) and much wider categories as you move along the scale (VS,SI,I). So a diamond with a SI1 clarity is not at the "bottom" of the scale... it's more in the middle and it can therefore offer a very good value because it will look the same to your eye as a diamond with a FL grade without the premium price of a FL, IF, or VVS diamond.


#4- There are some diamond clarity treatments that are occasionally done on low clarity diamonds in order to make them more marketable diamonds- Clarity Enhanced Diamonds.... these diamonds can be a great value!






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