The price of diamonds depends on a number of factors. These factors are clarity, cut, color, carat, shape, and Fluorescence.
Diamonds contain internal and external flaws, which are known as inclusions and blemishes. And diamonds clarity depends on the evaluation of the number and locations of these internal and external flaws. The difference between different grades can’t be noticeable by the naked eye, but its clarity grade can still affect its price. The diamond with high clarity is more expensive and diamonds with lower clarity are less expensive. Flawless diamonds are rare but they are the most valuable stones.
The other factor is color. The colored diamonds are graded on a scale that ranges from D to Z :
- D, E, F: Colorless
- G, H, I, J: Near-colorless
- K, L, M: Faint color
- N, O, P, Q, R: Very light color
- S, T, V, U, W, X, Y, Z: Light color
The lower the diamonds fall on the color scale, the lower the value. A diamond with ‘G’ color grade is less valuable than a diamond with an ‘E’ color grade. This is because colorless diamonds are rarer than others.
Cut determine how the diamond will sparkle and shine and it is slightly different from shape. The GIA only assigns cut grades to round brilliant diamond but retailers develop their own grading system to assess the cut of other diamond shapes. Diamonds with excellent cuts are more expensive and precious. The diamond’s cut grade considered the following factors: brilliance, fire, scintillation, weight ratio, and symmetry.
The weight of diamonds is measured in the form of a carat. Carat is a unit of measurement. One carat is equal to 0.20 grams or 0.007 ounces. The price of diamonds increases according to the increase in carat. The value of diamonds does not only depend on weight because carat is one of many qualities that affects a diamond’s value so other factors must be considered when determining the value of diamonds.
The shape of the diamond also affects its price. The cost of diamonds changes according to the shapes. Diamonds are available in round, princess, oval, radiant, pear, heart, cushion, emerald, and Asscher shapes. And the round shape is the most expensive. Most of the original diamonds are wasted when cutting a round diamond.
Fluorescence means diamonds emit a soft glow when placed under ultraviolet light. Fluorescence can create a cloudy or oily appearance is colorless or near-colorless diamonds and for this reason, the diamonds look less desirable and lowers its value or cost.