The 4C’s Of Diamonds: Learning Diamond Quality

The 4C’s Of Diamonds: Learning Diamond Quality

4Cs of Diamonds

Learn all the necessary information to perfectly assess diamond and their quality online on our website.


As a common rule, the whitest diamonds are the most expensive. Exceptions are brightly colored yellow, blue, or pink diamonds. These diamonds got their special color because unlike white diamonds, they don’t consist purely of carbon. A very decisive factor in the color ofis the presence of nitrogen. Most diamonds fall in between white and dark brown.

Except blue, bright yellow or blue diamonds, the most exceptional diamonds are the whitest diamonds are the least common of the normal color scale. Objectively, clarity is also a very important factor in helping to decide the overall quality of the diamond relative to its size. As a general rule, in our shop, we sell the top 20% in quality diamonds. Not only can we help you find your perfect white diamond, but we can also help you find a colored diamond on request, of course at very competitive prices.

Explanation of the color of diamonds (normal scale from white to brown)

  1. Colorless Diamonds

Most jewelers and diamond dealers agree on the following: it is recommended to set the whitest diamonds in white gold. The reason for this is because yellow gold then reflects in the diamond, making your diamond appear less white.

D color diamond whitest diamond is the one with color “D”. It is quite difficult to tell the colors D, E, and F apart, and the only way to know for sure is with an authentic certificate or if you buy it from a very trusted jeweler. D color diamonds are considered to be the most colorless and perfect white diamonds. Under good light, you can learn to distinguish them.

E color diamond second highest quality in white diamonds is color “E”. This is the second most colorless color, so of the white diamonds, “E” is color number two in value. The quality is still great, but with just their eyes without a magnifying glass, most people can’t quite distinguish E from D and F. With the color “E” you will notice a slight variation of white when viewed in the proper light. We then propose white light.

F color diamond third most expensive and highest quality color of non-colored diamonds is F. The experience that a person needs to distinguish F from D is not that significant, and it is easy to learn this yourself. Diamonds with color “F” like “D” and “E” are considered colorless diamonds and together they make up the three recommended colors for people who want to buy the highest quality.

  1. Almost Colorless Diamonds

“G” color diamonds are still high quality, but most people are now starting to see the yellow hue without significant effort. There are still a lot of people who can’t tell the difference between, for example, “F” or “G” but someone without expertise can finally distinguish this grade diamond with not too much effort.

H color diamond difference in color and other quality criteria is so small per step that many jewelers and diamond dealers need some time and effort to distinguish “H” from “G”. “H” still falls into the category of “nearly colorless diamonds” and still counts as high quality, but this is the lowest genuine fine grade diamond. For example, it has now become genuinely easy for a person who does not know diamonds well to distinguish the color between, say, “D” and “H”

  1. Nearly Colorless Diamonds with Light Tint

“I” color is starting to have a very easily distinguishable yellow color. It is by far really yellow, but the slight yellow hue is now starting to be very noticeable. “I” is the sixth-highest grade for diamonds. In general, this color still appears quite white, even with a yellow tint.

The seventh best quality in diamond is “J”. “J” color is last in the category of “nearly colorless diamonds with light tint” and is turning yellow again. But in general “J” is still quite white according to most. Tip for our customers who want to have this type of diamond set in an engagement ring: we suggest that you have diamonds of this color set in yellow gold. Read more info click here; Diamond Color

  1. Faint Yellow Diamonds

Note: We suggest that you have these diamonds set in yellow gold to bring out the ideal beauty.

K, L & M color diamonds that belong to the group of pale yellow diamonds are the colors “K”, “L” and “M”. The yellow nature of these stones is easily seen by the most untrained person. Although it still has a fairly white appearance, there is still a lot of white to be seen.

  1. Very Light Yellow Diamonds

The colors N, O, P, Q, and R count as very pale yellow diamonds. Although they are still fairly bright, diamonds in this color class are already starting to turn very clearly yellow. Diamonds of this type are still more white than yellow. Due to the increased statistical probability that customers will be dissatisfied with their diamonds if they fit into this color class, most jewelers will not offer the option to purchase diamonds of these colors.

  1. Light Yellow Diamonds

Colors S to Z“S”, “T”, “U”, “V”, “W”, “X”, “Y”, and “Z” all belong to that group. Although it is still quite light in color, the color is turning yellow now. However, it is not a real yellow diamond. Yellow diamonds are much more popular, but yellows belong to a completely different class of “yellow”.

  1. Yellow Diamonds

Diamonds can have many colors and once they no longer fit the AZ scale they belong to a completely different class, you can still arrange them by value, but that’s a completely different story. The colors of this species can vary from yellow to dark brown and even black. You can also find them in blue and pink, but those colors are extremely rare. With rarity comes increased value, so pink and light blue diamonds are extremely valuable relative to their size.

Different Types of Diamonds

The purity of a diamond plays a very big role in the valuation of diamonds. The highest value diamonds are the diamonds with the fewest inclusions. Simply put, the fewer inclusions a diamond has, the more valuable (and more precious).

  1. Superb Diamonds

The clarity of a flawless diamond flawless diamonds category includes all diamonds that still have no visible inclusions when magnified tenfold. Crystal clear diamonds are the most expensive diamonds when compared to other diamonds of the same size and color.

Perfectly clean diamonds contain no real inclusions but still have very small blemishes that only experts can notice. Perfectly clean diamonds are very rare. Only 2% of all diamonds belong to this top category, it is the absolute maximum in quality of clarity you can expect from a diamond.

  1. Very, Very Small Inclusions

The clarity of diamonds with very, very small inclusions. Diamonds with the designation VVS1 and VVS2, meaning “very slightly included” are diamonds where you can notice very small inclusions without being an expert in judging diamonds. VVS1 is slightly better than VVS2, but they are both still considered very qualitative.

Moreover, they are still very rare! Statistically, their rarity is 1 out of 12, which makes them better than 11 out of 12 diamonds if you were to pick an average assortment. Crystal clear diamonds are some of the highest quality types and are often used to make the finest and most expensive jewelry.

  1. Diamonds with Very Small Inclusions

The “very small inclusions” category consists of VS1 and VS2. VS1 is slightly better than VS2. Diamonds of this category are very suitable for fine jewelry, and these diamonds are very often used for finer diamond jewelry. On the diamond quality ladder, they are 1 out of 6, or better than 5 out of 6 diamonds. Since diamonds with very small inclusions are rare, they still cost a significant amount more, but less than diamonds with no visible inclusions or with very few inclusions.

  1. Diamonds with Small Inclusions

Diamonds that fall under the “minor inclusions” type contain very obvious inclusions when viewed under magnification of tenfold. About a third of all diamonds are as good as or better than these diamonds, which makes them considerably less special. When most people buy diamonds, especially those of considerable size, they try to buy better quality than this one because one can honestly easily see the defects inside.


Diamonds with clear inclusions At this point, it is already starting to be very easy to notice inclusions. Diamonds of “I1” quality belong to the lower half in scarcity. These quality are not often used for better jewelry.

  1. Diamonds with Very Clear Inclusions

Diamonds of the type “with very clear inclusions” have inclusions that are noticeably easy to notice. There are so many inclusions in diamonds of this type that they get in the way of the reflection of the light.

Carat of Diamonds

“Carat” has a very special origin. The term comes from a tree that grows to about 10 meters tall called “Ceratonia Siliqua”. The tree produces a fruit with a very peculiar characteristic: seeds that consistently weigh 0.2 grams. Because of the amazing accuracy of the weight of this seed, people began to use it to weigh diamonds, and so began the history of the terminology “carat” which has survived to this day.

An uncut diamond is often much heavier than a polished diamond. For example, a diamond loses on average 50% to 60% of its weight. If two stones have the same color and clarity, the stone with the higher weight in carats will be the more expensive of the two. It is also important to mention that the price increases exponentially compared to the caricature of a diamond. Because larger stones with their size are considerably rarer.

The Cut Shape

This section of this page explains the differences in cut quality. Every cut shape has an ideal. That is, there are ideal proportions for hard-cut diamonds, for example, or round-cut diamonds. The main reason why some diamonds are not ideally cut is that experts had decided that in the case of this diamond there is a certain balance between getting the stone as big as possible and giving it up for a bit of proportion before it.

In short, it was found that for a very small difference in reflection and shape, too much diamond would have to be cut. Cut hardly influences the price of diamonds; clarity, color, and caricature play a much bigger role.


Diamonds that are excellently cut fit perfectly or almost perfectly to the idea of what has been decides as ideal cut proportions. Most jewelers would recommend diamonds of this type because the reflection is best with these types of cuts. Diamonds that are excellently cut are rare, only 1 out of 25 is so well cut, but in Antwerp, you can find a disproportionately many.


The second best quality in sharpening. Light starts to reflect here with a slight aberration, but it is not significant. It is still a very good cut. About 1 in 8 diamonds are cut as good as the kind that fits into the “very good” quality category.


About 1 out of 4 diamonds in the cut diamond market are as good as this grade or better, this still makes it a cut of considerable quality. However, most jewelers will suggest getting a stone with a better cut, as the difference in reflectivity is already starting to become noticeable, and diamonds play their facets less with the light.


Diamonds of this type deviate considerably from the agreed ideal in the cut. At the moment, the reflection inside the diamond is very clearly negatively influenced.


The reflection of diamonds of this type is sincerely not recommending for their use in fine jewelry. The reflection of these diamonds is very negatively noticed with a blind eye, they lack brilliance.

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Written by
Rex Baker