Diamond Evaluation System:
What Are the 4Cs and Why Are They Important?

While diamonds continue to fascinate people with their beauty and value, it is crucial that these precious stones are properly evaluated. The most common system used to determine the quality and value of diamonds is known as the 4Cs, developed by the Gemological Institute of America (GIA). In this article, we will explain what the 4Cs mean and why they are important.

1. Cut

The cut of the diamond is one of the most important factors determining the brilliance and sparkle of the stone. The cut refers to the accuracy of the angles and proportions on the diamond's surfaces. A good cut allows the diamond to reflect light perfectly and creates maximum brilliance. The GIA grades diamond cuts from "Poor" to "Excellent". A perfectly cut diamond has an eye-catching sparkle and is worth more than other diamonds.

2. Color

Diamonds are graded on a color scale from D (colorless) to Z (slight yellow or brown tones). The most valuable diamonds are D grade diamonds, which are completely colorless. As you go down the color scale, the value of the diamond generally decreases. Colorless diamonds reflect light better, creating more brilliance and fire. Therefore, the color grade plays an important role in the value of the diamond.

3. Clarity

Clarity is a criterion that evaluates the diamond's internal and external flaws (inclusions and blemishes). The GIA clarity scale ranges from "Flawless" to "Included". Flawless diamonds are rare stones that show no internal or external flaws even under 10x magnification and are therefore highly prized. On the other hand, diamonds with inclusions contain flaws that are visible to the naked eye, which reduces their value.

4. Carat Weight

Carat weight refers to the physical size and weight of the diamond. One carat is equal to 200 milligrams and is usually expressed in decimal fractions (for example, 0.75 carats). The higher the carat weight, the higher the value of the diamond, but the quality of the other 3Cs also affects this value. The value of a large diamond increases even more if the criteria for cut, color and clarity are high.

Why are the 4Cs Important?

The 4Cs provide an objective and consistent evaluation of diamonds. This system helps buyers understand the true value of a diamond and make a sound investment. Furthermore, the 4Cs help to determine the beauty and rarity of the diamond, enhancing the emotional and aesthetic value of the jewelry.
At Vals Diamond, we meticulously evaluate all our diamonds and provide our customers with the highest quality stones. Each of our diamonds is thoroughly examined and certified according to the 4C criteria. Enjoy making the right and reliable diamond choice with the assurance of Vals Diamond.