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What color is the most expensive diamond?

The color of a diamond is one of the four criteria of the 4C system for assessing its quality and value, adopted in international practice. This characteristic directly depends on the chemical composition of the mineral and does not change over time. Since a diamond has no color, it allows more light to pass through it than a colored stone. Due to the way diamonds are formed, only a few specimens are truly colorless. When grading, it is believed that the less color, the better the quality of the diamond.

What colors are diamonds?

  • Colorless;
  • With shades of different saturation;
  • Dyed: yellow with shades of different saturation, brown with shades of different saturation;
  • With a fantasy coloring.

International Diamond Color Grading System

Many jewelers use the GIA (Gemological Institute Of America) professional color chart. The color scale is divided into groups depending on how noticeable the color of the stone is. It starts with completely colorless stones and ends with yellow diamonds. Each group is designated by a letter of the Latin alphabet: from D (colorless stones) to Z (light yellow or with a visible brown tint). Each letter corresponds to a specific spectrum of colors.

Assessing the color of a diamond comes down to determining the color group. The coloring of yellow and brown stones with a color characteristic below Z is considered fancy. For stones with fancy colors, there are their own color groups; when describing such stones, the word “fancy” is used, then the color and its intensity are described.

To create a universal scale for grading diamonds by color, gemologists at the GIA Institute carefully selected a number of standard stones. To determine what color the diamonds being graded are, they are compared to reference stones.

*more details on the diamond sales page.

Russian assessment system

The national standard of the Russian Federation offers a similar approach, but numbers are used instead of letters for designation. The technical requirements used in the evaluation of diamonds are given in TU 117-4.2099-2002.

The classification includes groups from 1 – colorless diamonds to 9 – stones of the brown spectrum. Within groups 8 and 9 there are subgroups that describe the intensity of yellow and brown shades, respectively. Group 1 should also include diamonds of unique colors (pink, blue, emerald green, etc.).

What color are diamonds

Diamonds are almost 100% pure carbon, a completely colorless mineral. But sometimes the crystals acquire a distinct shade, which may be due to impurities in the composition or some other factors. In nature, there are yellow, brown, blue, gray, black, pink, red and green diamonds.


Cause of color change: nitrogen impurities.

Deposits: yellow diamonds are mined in different places, but are most often found in Russia (Yakutia), Angola, Congo, Sierra Leone. Particularly valuable golden stones are found in African deposits.

Along with brown, yellow is the most common of fancy diamonds. They can be golden, creamy yellow, honey, amber. Saturation depends on the amount of impurities.

These gemstones pair beautifully with yellow gold frames. To further accentuate the color of the diamond, the jeweler can use a white gold setting for the decoration.


Reason: iron impurities.

Deposits: Australia (Argyle), Russia (Yakutia) and others.

The brown crystal can be of different shades – from champagne color to rich cognac. In Ancient Rome, rings with brown diamonds were worn by the nobility. Such precious stones were a symbol of power and wealth.

In jewelry, brown diamonds are combined with frames made of red or yellow gold. Jewelers can also create interesting compositions using white gold and brown crystals with a cool tint.


Reason: boron impurities.

Deposits: mainly found in South Africa (Cullinan kimberlite spring) and Australia (Argyle).

This is one of the rarest fancy diamond colors. Saturation can vary from soft blue to almost turquoise. In medieval Europe, blue crystals were extremely highly valued; they were used to decorate the interiors of royal palaces.

In jewelry, blue gemstones are perfectly complemented by white gold settings and colorless diamond scattering.


Reason: hydrogen impurities.

Deposits: found in many mines and quarries in Brazil, Russia, India, Africa and Australia. In the Australian Argyle deposit, particularly rare stones with a bluish-gray tint are found.

Gray diamonds can have different intensities – from cool silver to dark, gloomy tones. In jewelry they embody restraint and elegance, ideally combined with white gold and silver.


Cause: inclusions of graphite, pyrite or hematite.

Deposits: most often found in South Africa, Brazil and Venezuela.

Although black always remains stylish and trendy, diamonds of this shade have long been underappreciated. Until the 20th century, they were considered insufficiently aesthetic and were used mainly for technical purposes. This may be due to the fact that many black stones are opaque.

Today, black diamonds are widely used in jewelry. They can be combined with different types of frames and combined with other gems.


Reason: changes in the crystal lattice.

Deposits: 90% of pink crystals are mined in Australia (Argyle).

Saturation varies from light pastel tones to deep, almost cherry tones. Pink diamonds are extremely rare in nature, and therefore each example deserves to be part of a museum collection. With the help of these fancy crystals, jewelers create authentic works of art.


Reason: changes in the crystal lattice.

Deposits: Australia, Brazil, Indonesia, India. The most expressive samples are mined in the Argyle deposit in Australia.

Red diamonds are luxurious and incredibly valuable crystals that are rarer than others. They can be purple, reddish-brown, red-pink. Such minerals go perfectly with any frames that are in harmony with them in tone.


Reason: prolonged exposure to natural radioactive radiation.

Deposits: Africa. Finds in other mining regions are rare.

Green crystals can be soft mint, dark and deep, bright and rich. In jewelry they are combined with white, red and yellow gold.

The best

The most expensive diamond is red, with a blue stone slightly inferior in price. These same colors are included in the ranking of the rarest diamonds. Due to the fact that they are extremely rare in nature, but jewelry with them is in demand, stones of such shades are preferred to be grown in artificial conditions.

The demand for fancy diamonds of all colors has been increasing over the past decades. Their uniqueness attracts collectors, and market stability and steady price growth attract investors.
Diamond color

Diamond color Diamond color is one of the four criteria of the 4C system for assessing its quality and value, adopted in international practice. This characteristic directly depends on the chemical composition of the mineral and does not change over time. Since brilli.

Diamonds come in different shades of color, from colorless to various shades of yellow. Although most diamonds appear colorless to the untrained eye, many have slight tints of yellow or brown that affect their value. The closer a diamond is to colorless, the more rare and valuable it is.

White or colorless diamonds are graded on a color scale from D (colorless) to Z (highly tinted yellow). It is a generally accepted and standardized color grading system that has been in use since the 1950s. This evaluation is performed in a special, controlled environment, as the difference between each shade is very subtle and often unnoticeable to the untrained eye.

In addition to the D–Z color scale, natural fancy color diamonds such as deep yellow, pink, green and blue are outside the color range of white diamonds and are extremely rare and valuable. These natural fancy color diamonds are graded based on the intensity of their color.

The more intense and brighter their shade, the higher their cost. It is important to note that a diamond with a yellow tint and a natural fancy yellow diamond are not the same thing. A white diamond with a yellow tint has a more subtle color, while a fancy yellow diamond comes in various shades of rich and vibrant yellow.

The color grade of each certified diamond is indicated on the accompanying GIA, EGL certificate. or SGL. Be sure to ask the seller for a diamond certificate when viewing a diamond.

D: Absolutely colorless. The rarest and most valuable. Less than 1% of diamonds mined in the world are D color.

E–F: Also considered colorless, although it is a minimal trace of color that can only be detected with the help of an expert gemologist. Less rare than D and more valuable than G–H.

G – H: Almost colorless. To the naked eye, these diamonds appear transparent and colorless, although they also contain minute traces of color. Less rare than E–F, but more valuable than I–J.

I–J: Almost colorless with a faint yellow tint. Less rare than G–H, but more valuable than K–L.

K–L: faint yellow tint visible to the eye. Less rare than I–J, but slightly more valuable than M–N.

M–Z: Very light yellow tint, easily visible to the eye. The least valuable grade of diamond color.

Fluorescence is a natural phenomenon that affects almost a third of all gem-quality diamonds. Often misunderstood, fluorescence is most simply described as a situation in which a diamond emits a soft glow when exposed to ultraviolet (UV) light.

We are exposed to ultraviolet light every day, through sunlight and through the light emitted by fluorescent light bulbs. The fluorescence characteristic is caused by the presence of nitrogen and is a natural phenomenon – like color, it is not determined by human manipulation of the rough gemstone.

When a diamond exhibits fluorescence, there are two factors that must be taken into account:

Color: Blue is the most common fluorescence color (95%) and yellow is the second most common color. Diamonds with blue fluorescence generally appear whiter than their grading suggests. This is good for the buyer as the diamond will look like a diamond that is worth much more.

However, diamonds with yellow fluorescence appear more yellow when exposed to ultraviolet light, which is seen as a negative aspect since diamonds with a yellow tint are worth less than diamonds that are almost colorless. So, this could mean that a diamond with yellow fluorescence appears to be a low color grade diamond when its true body color is actually a high grade diamond.

Force: Fluorescence strength varies from none, weak and medium to strong and very strong. Although some diamonds fluoresce very strongly and appear dull or cloudy even under normal lighting, most diamonds do not have a noticeable fluorescent effect when viewed by the untrained eye.

Fluorescence affects the value of a diamond depending on its color and strength. If strong yellow fluorescence is present, it can reduce the diamond’s value, whereas the presence of blue fluorescence can increase the value of a diamond that does not have a high color gradation (and therefore has a yellowish tint).

Diamonds certified by GIA or EGL clearly indicate the presence of fluorescence on their Certificates of Authenticity. If a diamond has no fluorescence, it will be labeled as “none,” and if fluorescence is present, it will be labeled as “weak,” “medium,” “strong,” or “very strong.”

Since fluorescence is a natural phenomenon, it cannot be judged in isolation. Each diamond is unique and therefore affected by fluorescence in a unique way. When purchasing a diamond, always look for its unique characteristics and qualities and make sure you understand the grade listed on its certificate.

The true value of a Shimansky jewelry creation is only realized when it is worn by the person for whom it is intended.

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