How to choose diamonds
Before you buy jewelry, you need to check the certification.
The GIA (Gemological Institute of America) system is the most common among diamond certification standards. This is a non-profit organization that develops and implements standards for assessing the quality of diamonds, and is rightfully considered the most respected gemological laboratory in the world.
The GIA (Gemological Institute of America) system is the most common among diamond certification standards. This is a non-profit organization that develops and implements standards for assessing the quality of diamonds, and is rightfully considered the most respected gemological laboratory in the world.
According to the GIA, the value of a diamond is affected by four characteristics, which are referred to as the 4Cs:
- The first "C" - Carat Weight (weight in carats);
- The second "C" - Color (color);
- The third "C" - Clarity (purity);
- The fourth "C" - Сut.
- The first "C" - Carat Weight (weight in carats);
- The second "C" - Color (color);
- The third "C" - Clarity (purity);
- The fourth "C" - Сut.
1 carat is equal to 0.2 grams. Under natural conditions, large diamonds are rare. The greater the weight of a diamond, the higher its price. Depending on the weight, the stones are divided into small (up to 0.29 carats), medium (0.3-0.69 carats) and large (more than 0.7 carats).
Colorless stones are of particular value.
The GIA color scale is divided into groups: it starts with colorless diamonds, then there are smooth transitions with an increase in the saturation of yellow, and ends with the last group, which has a yellow color. According to the GIA system, it is customary to designate each color with a letter of the Latin alphabet from D - colorless to Z - yellow.
The GIA color scale is divided into groups: it starts with colorless diamonds, then there are smooth transitions with an increase in the saturation of yellow, and ends with the last group, which has a yellow color. According to the GIA system, it is customary to designate each color with a letter of the Latin alphabet from D - colorless to Z - yellow.
Clarity is the freedom of a stone from inclusions and internal defects. A defect (characteristic) is considered internal, even if it comes to the surface of a diamond, if it cannot be removed by repolishing the stone without losing weight. Other things being equal, flawless diamonds are considered the most valuable.
The evaluation of diamonds and the quality of the cut is closely related to the human perception of the stone. Since a well-cut stone is perceived by a person as beautiful and causes positive emotions. A person will perceive a dull, poorly playing or low-contrast diamond worse (these are the characteristics of a diamond related to how it redistributes light into the surrounding space).