Diamonds symbolize pure, eternal and faithful love. We may all buy diamonds at engagements, weddings and anniversaries. When we buy diamonds, we often hear the word 4C classification of diamonds. What is the 4C classification of diamonds and what effect does it have on the value or quality of diamonds? Let's learn from this article together.

The 4C classification of diamonds is a recognized diamond classification standard initiated by GIA Gemological Institute of the United States. It starts with the four initials "C" of the color, clarity, carat weight and cut of the diamond, which is called "4C" for short. 4C classification judges the quality of diamonds by color, clarity, carat weight and cutting grade.

First, the color of the diamond.

The color of a diamond refers to the colorless degree of the diamond. Colorless diamonds are graded from D (transparent and colorless) to Z (yellow), and the darker the color, the lower the grade. Diamonds starting with D are the highest color, completely colorless and very rare. Starting from D, the price will gradually become lower, and there is also a certain gap between the prices of various color grades. The price difference between diamonds with high color grade is greater than that between diamonds with low color grade.

Second, the clarity of diamonds.

The clarity of a diamond refers to the degree of defects inside and outside the diamond. Natural diamond is formed by carbon at high temperature and high pressure, which leads to the inclusion of natural diamond. The purity of diamonds usually depends on the number, size, shape and color of these inclusions. Experts observe diamonds under the magnification of 10, and classify the clarity grades into FL, IF, VVS, VVS, SI and I (international GIA standard). The higher the clarity of a diamond, the more expensive it is, the more flaws it has, and the lower the price.

Third, the cutting of diamonds.

Diamond cutting has a very important influence on the appearance and quality of diamonds. Perfect and exquisite cutting can make a diamond shine. Diamond cutting is generally divided into five grades: ideal cutting, very good cutting, good cutting, general cutting and poor cutting, and the corresponding English is excellent, very good, good, average and poor. The better the cutting, the higher the price of diamonds.

Four. Carat diamond

The weight of a diamond is calculated in carats, 1ct= 100 minutes = 0.2g Usually, the weight of a round diamond is about 0.30, 0.50,1.00ct. There is a saying that diamonds have a carat premium. For example, a 1 carat diamond is 80,000 yuan, so a 2-carat diamond is estimated to be worth more than 200,000 yuan. The price of a 2-carat diamond is not twice that of 1 carat, but much higher than that of a 2-carat diamond. This is the carat premium of diamonds. The price of diamonds increases step by step with the increase of diamond weight.

The above is the introduction of diamond 4C classification. After understanding the 4C classification of diamonds, we can use these standards as a reference when buying diamonds, and buy our favorite diamonds with cost performance.