The weight or size of a diamond is expressed in (carats) also known as (carats).
1.00 ct is equivalent to 0.2 grams, the heavier the weight, the more valuable it is. It is divided into 100 points
2.5mm
3.0mm
3.8mm
4.1mm
4.5mm
4.8mm
5.2mm
5.8mm
6.5mm
6.9mm
7.4mm
8.2mm
9.3mm
11.2mm
When measuring the weight of a diamond, this standard is so precise that it is rounded to two decimal places. For diamond jewelry, carat is the sum of the carats of diamonds it contains. A diamond necklace set with 10 diamonds of 0.30 carats. So this will be a 3.00 carats necklace.
The closer a diamond is to transparent and colorless, the rarer and more valuable.
There are shades ranging from white to yellow. The color of a white diamond is determined by the internationally recognized GIA color palette. The color of diamonds ranges from the most valuable D color (colorless) to the least valuable Z color (light yellow).
Diamonds can also come in other colors such as brown, orange, pink or blue. The most intense shades are called “Fancy Colored”, which is also mentioned on their diamond certificates. These fancy colored diamonds are very rare and therefore very valuable. The color grading system does not apply to colored diamonds.
A fine cut makes a diamond look better.
A diamond’s “brilliancy” can be greatly enhanced or reduced depending on how it is cut. Proportion, symmetry, and polish have a major impact on the degree to which a diamond refracts light, known as sparkle.
Well-cut diamonds exhibit the most brilliance, while shallow or deep diamonds have a portion that leaks out and does not return to the observer’s eye.
The amount of inclusions will affect the reflective ability of the diamond
Every diamond may contains inclusions, and the number, size, shape, and color of these inclusions determine a diamond’s clarity and uniqueness. Inclusions are hidden within the diamond and can be of different colors. Most of the inclusions are indistinguishable to the naked eye and must be clearly seen under a 10x magnifying glass.
Clarity is a grading system that measures the number of inclusions and imperfections: from FL/IF (Flawless/Internally Flawless) to I (Impotent). Class I clarity means that the inclusions can be identified with the naked eye.
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