The 4C's Diamond Grading System

jsherack By jsherack, 10th Mar 2015 | Follow this author | RSS Feed
Posted in Wikinut>Writing>Columns & Opinions

This item will talk about natural and man made diamonds. You can read a little about both and make your own conclusion comparing the both of them.

A Break Down Of The Grading System

Diamonds have been around for millions of years and still today is the number one gem, especially with engagement rings. A way of grading and determining a diamonds value a series of four judging methods known as the four C's were performed. This grading system began during the middle of the 20th century and is now known globally today. Before this there was no standard of agreement on how a diamond can be judged. So below is the meaning of the 4C's known as GIA grading system which started internationally in 1953.

The grading system is very important before making your diamond purchase. Use this grading system as your tool to determine the current prices on these graded diamonds. When you go to a reputable diamond company you know most likely you can still be a victim of over paying. If your diamond purchase is very high you have a right to request an appraisal from a know company but if your going to a well known diamond maker that would be an insult. I'm talking about this a lot because my girlfriend is yelling at me asking when we're getting engages!(LOL)

At any rate I did my research and felt by writing this article it might help others including myself. So back to the grading system below:


The GIA grading system goes from D-Z and breaks down below as follows.

D-F = Colorless which would be the most flawless and of course most expensive. Keep in mind no matter what anyone says there is no thing such as a flawless and totally perfect diamond.

G-J = Near Colorless

K-M = Faint

N-R = Very Light

S-Z = Light


This clarity grading area grades for blemishes/carbon spots from high heat while buried beneath the earth. The grading scores are as follows below:


INTERNALLY FLAWLESS - This can be a blemish left while polishing a diamond.

VERY, VERY SLIGHTLY INCLUDED (WS1) - A small blemish such as a pin point.

VERY, VERY SLIGHTLY INCLUDED (WS2) - Can be seen using 10x magnification but considered to be minor. The WS1 and WS2 can only be seen by a skilled person using 10x magnification.

VERY SLIGHTLY INCLUDED (VS1) - A VS1 can be seen by someone with effort using 10x magnification as well as the VS2 and considered minor

I1,I2 and I3 - Are obvious under 10x magnification which could effect the brilliance or the transparency.


A good cut diamond with have a beautiful and a beautiful reflection while by the sun. For all the grades in the cut area all are also graded to make sure the diamont cut is not too steep or sloped. So here are the grades below:

Excellent - The diamond is in perfect grade and wins the top spot.

Very Good - The diamond brightness may be a little poor and the diamond may have a splinter look to it.

Good - This diamond may appear to lack some contrast.

Fair - This diamond may appear to have a dark shine to it.

Poor - This will have a darker shine to it with imperfections due to the fact the diamond lacked do from its natural formation process.

Carat Weight

Lets talk below about the last grading area which is the carat weight. I'll break it down below:

Each carat can be divided by 100%. For example a .50 carat size diamond will be 50 points and .25 carat 25 points and so on. A one carat diamond can be called a one point.

So these are the 4C's of grading a diamond. I hope some of you found this interesting and that it may help you if you are going out in search of a diamond.

Thanks For Reading!


Diamond Grades, Diamond Information, Diamonds, Garding A Diamond, Grading Diamonds, Information About Diamonds, Man Made Diamonds, Natural Diamonds

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author avatar jsherack
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author avatar Kingwell
29th Mar 2015 (#)

Good share! Blessings.

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