The 4C of a diamond is a measure to judge the value and quality of a diamond. “4C” means CARAT, COLOUR, CLARITY and CUT.For this reason, it can be speculated that men rings silver The market feedback will get better and better, which is one of the important reasons why it can develop. 
What does “CARAT” in 4C mean?
The weight of diamonds is calculated in carats (also known as cards), which is an important factor affecting the price of diamonds. 1 carat = 0.2 gram, one carat is divided into 100 parts, and each part is called one point. 0.75 carat is also called 75 points, and 0.01 carat is 1 point. Unlike gold and silver, the price of diamonds is calculated directly by weight. Other conditions being similar, with the increase of diamond weight, its value increases geometrically. A 2-carat diamond is usually more expensive than two 1-carat diamonds of the same quality.
What does “CLARITY” in 4C mean?
Diamonds are crystallized in the mantle magma deep in the earth, with complex environment, diverse components and extremely high temperature and pressure. After hundreds of millions of years of geological changes, it is inevitable that there are various sundries or defects inside them. The color, quantity, size and location distribution of these inclusions have different degrees of influence on the clarity of diamonds.
There are 10 grades of diamond clarity, including LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2 and P3. Diamonds are divided into five grades: F-IF, VVS1-VVS2, VS1-VS2, SI1-SI2 and I1-I3.
What does “COLOUR” in 4C mean?
Most diamonds are colorless, but if you look closely, you will find that there are some yellow tones, which is because diamonds contain a small amount of nitrogen. The whitest Diamond is classified as D (starting with the first letter of diamond). Diamond color is divided into 11 grades, which are D, E, F, G, H, I-J, K-L, M, N-O, P-R and S-Z in turn.
What does “CUT” in 4C mean?
Among the 4C standards of diamond value measurement, only cutting is directly influenced by human activities, which directly affects the “ability” of diamond to refract light. Diamond cutting can be divided into four grades: EXCELLENT/EX, VERY GOOD/VG, GOOD/G and fair/f.