Diamonds are D, E and F, also known as transparent and colorless, which are extremely precious and rare. The difference between the two depends on experts to distinguish carefully. The more common color is G to J, which is also called near colorless. It is easy for experts to distinguish, but it is difficult for ordinary people to distinguish, and it is even more difficult to detect if it is embedded in jewelry; The color below k, also called light yellow, may be distinguished by ordinary people.
Diamonds have many natural colors, from precious colorless (white after cutting), rare light blue and pink to common light yellow. The more transparent and colorless, the more white can penetrate, and the richer the color after refraction and dispersion. The grading of diamond color is determined by technicians repeatedly comparing the diamond to be graded with the standard color colorimetric stone in the grading environment of professional laboratories.
Extended data:
Diamonds are natural minerals and contain some natural defects such as other minerals or cracks. The fewer and rarer these inclusions are, the higher their value is. Therefore, the clarity of diamonds is divided into different grades according to the size, quantity, color, location and characteristics of inclusions and other defects. The classification of clarity grade is based on ten times magnification observation. Pure diamonds are the most popular, but also the most expensive.
GIA (Gemological Institute of America) is recognized as one of the most authoritative diamond appraisal institutions in the world, the founder of diamond 4C classification theory and the only non-profit appraisal institution in the world. GIA certificate issued by GIA is recognized as the most authoritative certificate in the world. Clarity-determines the content of diamonds. Next, Bian Xiao will take you to know more about the clarity of diamonds.
From high to low, it is divided into: FL-IF-VVS1-VVS2-VS1-si2-I1-I2-i3, where FL is the highest level (flawless), and if can only see very small surface features, VVS65438. VS 1 and VS2 have very small connotations, one is extremely difficult to look at and the other is difficult to look at; SI 1 has a small content, which is extremely difficult to see, and it is difficult for the naked eye to see the content; SI2 has small inclusions, which can be seen by naked eyes.
Baidu encyclopedia-diamond color scale