Color Rarity Chart represents average values based on pure colors

​Some diamonds contain mix of colors which can increase or decrease the diamond's value. 
IF / VVS diamonds and select shapes as a round, emerald and princess are frequently sold at premium.
The rarer the color, the more valuable the natural color diamond. 

​​​The range of natural colored diamonds is so broad that diamonds will range from 2,500 $/ct (left side) to 1,500,000 $/ct for some specimens on the right side.

Introduction

Natural Colored Diamonds have been discovered in every color of the rainbow, including yellow, brown, pink, blue, green, orange, red, and even black. 
These diamonds are formed in the same way as traditional diamonds, with carbon atoms arranged in a crystal lattice structure. However, they contain impurities or structural defects that cause them to absorb certain wavelengths of light and produce color.

The intensity and distribution of color in a natural colored diamond depend on the type and amount of impurities present, as well as the crystal structure and growth conditions. For example, yellow diamonds often contain nitrogen impurities, while pink diamonds have a high concentration of structural defects in the crystal lattice.
Natural colored diamonds are extremely rare and valuable, with prices often exceeding those of white diamonds. They are graded on a color scale that takes into account the hue, saturation, and tone of the diamond's color, with the most valuable stones exhibiting a deep, saturated color.


Due to their rarity and unique beauty, natural colored diamonds are highly sought after by collectors and connoisseurs, as well as by those seeking a one-of-a-kind engagement ring or other piece of fine jewelry.
Colored Diamonds Colors & Hue

Four Attributes that affects value of Colored Diamonds
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1. Color: The color is the most important factor in determining the value of a colored diamond. The more intense and pure the color, the higher the value. Colored diamonds are graded on a scale from Faint to Fancy Vivid, with the latter being the most valuable. Some diamonds can contain secondary colors which could increase or decrease the diamond value.
   
   
2. Carat weight: As with all diamonds, the carat weight is an important factor in determining value. The larger the diamond, the more rare it is, and the higher its value.
3. Clarity: The clarity of a colored diamond refers to the number and location of inclusions or imperfections within the diamond. The clearer the diamond, the more valuable it is.
4. Cut: The cut of a diamond refers to its shape and the quality of the cut. A well-cut diamond will reflect light more effectively, resulting in greater brilliance and fire. A well-cut colored diamond will enhance its color, making it more valuable.

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CLARITY

Flawless (FL)
No inclusions and no blemishes visible under 10x magnification

Internally Flawless (IF)
No inclusions visible under 10x magnification

Very, Very Slightly Included (VVS1 and VVS2)
Inclusions so slight they are difficult for a skilled grader to see under 10x magnification

Very Slightly Included (VS1 and VS2)
Inclusions are observed with effort under 10x magnification, but can be characterized as minor

Slightly Included (SI1 and SI2)
Inclusions are noticeable under 10x magnification

Included (I1, I2, and I3)
Inclusions are obvious under 10x magnification which may affect transparency and brilliance
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CUT

​Diamond's cut is not about the shape (round, emerald, pear), but a diamond's cut grade is really about how well a diamond's facets interact with light.
A diamond's cut is crucial to the stone's final beauty and value. And of all the diamond 4Cs, it is the most complex and technically difficult to analyze.
Calculation the proportions of those facets that influence the diamond's face-up appearance.
​These proportions allow to evaluate how successfully a diamond interacts with light to create desirable visual effects such as:

Brightness: Internal and external white light reflected from a diamond.

Fire: The scattering of white light into all the colors of the rainbow.
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Scintillation: The amount of sparkle a diamond produces, and the pattern of light and dark areas caused by reflections within the diamond.

Considering the purchase of a colored diamond, it is recommended to have a certificate even for small stones in order to avoid the purchase of a modified diamond, HPHT or synthetic.

To discover the advanced technologies to modify diamonds, requires the use of specialized equipment that can only be found in specialized diamond laboratories.
Laboratory Certificate from a renowned laboratory recognized around the world is the only reliable source of colored or white diamond evaluation.
In our opinion, the following laboratories guarantee a reliable assessment of origin and value of Colored Diamonds.
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