The clarity grade is determined by the number, size, color and position of inclusions or defects in the gem.
Unless it is a large diamond, the clarity grade has little effect on the visible appearance of the diamond. The bigger the diamond is, the bigger the cut surface is, and the cut surface will increase the visibility of clarity. In the 4C standard of diamonds, clarity is considered as the least important quality, because the brilliance of diamonds is mainly determined by the cutting. The higher the diamond cutting grade, the harder it is to find inclusions.
However, there are some cutting methods that require the highest possible clarity level, such as "square" or "emerald"-both shapes of diamonds use step cutting, which makes it easier to detect the clarity problem than other cutting methods.
Extended data:
The diamond ring grade is 4C, including carat, color, clarity and cut.
1 and carat are the measurement units of diamond weight, 1 carat = 200mg = 0.2g. With the increase of diamond weight, its value increases geometrically.
2, the color from excellent D colorless to general Z light yellow, * * * is divided into 23 grades, the lower the grade, the lower the price.
3. Clarity refers to the number of internal defects and inclusions. The higher the clarity, the less defects and impurities.
4. Cutting gives diamonds a second life. Good cutting can fully reflect the brightness and fire color of the diamond while keeping the weight of the original stone as much as possible.
Baidu encyclopedia-diamond
Baidu encyclopedia-diamond clarity