What do the 4Cs of diamonds refer to? Is the clarity of diamonds SI very bad?

Diamonds are a type of jewelry that everyone loves very much. Diamonds come in many different purities and materials. The 4Cs of diamonds represent the value and quality of diamonds, and actually refer to the carat weight of diamonds. Everyone should pay attention to this.

Weight, clarity, color, and cut. The 4Cs of diamonds are the abbreviations of four English words beginning with C, which refer to the carat weight (CARATWEIGHT), clarity (CLARITY), color (COLOUR), and cut (CUT) of diamonds. The so-called "4Cs" are the abbreviations of four English words beginning with C, which refer to the carat weight (CARATWEIGHT), clarity (CLARITY), color (COLOUR), and cut (CUT) of diamonds. You can easily understand the value and quality of a diamond by appreciating the four points of "4C". Diamond price = weight + color + clarity + cut. Among the 4C standards for measuring the value of diamonds, only the cut is directly affected by human beings. Although diamonds can be processed into a variety of different shapes (fancy) to meet different tastes, the excellence of the cut directly affects the sparkle and shine of diamonds. Unprocessed diamonds have no luster. Only after the precise design and ingenious carving by well-trained craftsmen can the veil of diamonds be unveiled, making full use of the nature of light to present a rainbow-like "fire" and have the characteristics of flashing. The basic forms of cutting include: round, pear, heart, emerald, princess, olive, and oval.

The clarity of diamonds is relatively good. Diamond clarity grade SI means that very obvious inclusions can be seen with a ten-fold magnifying glass, which means that the inclusions of diamonds cannot be seen with the naked eye. We know that every diamond has inclusions, and the number, size, shape and color of the inclusions will determine the clarity and characteristics of each diamond. The inclusions of many diamond jewelry cannot be seen with the naked eye. The fewer inclusions inside the diamond, the more light is refracted, and the more brilliant the diamond will be. Diamond clarity refers to the clarity grade of diamonds judged by professionals based on the inclusions of diamonds when observing the inside of the diamond with a 10-fold magnifying glass. Diamond clarity SI is the grade of flaws in the diamond clarity grade. In this grade, SI1 and SI2 diamonds can see obvious inclusions under a ten-fold magnifying glass, while VS clarity diamonds cannot be seen with our naked eyes. SI2 clarity has flaws that can be seen with the naked eye or from the top of the diamond, and the inclusions are usually black, so there is a big difference between diamond clarity vs and SI. Diamond VS clarity is better than diamond SI clarity.

There are six major grades: FL, IF, VVS1-2, VS1-2, SI1-2, I1-3. Diamond external flaws refer to some defects that are not original but caused by subsequent processing, including extra facets, polishing lines, scratches, small pits, growth lines, and damage.

1. FL (Flawless): When a diamond grader observes the diamond under a 10x magnifying glass, there are no flaws inside or outside the diamond.

2. IF (Internally Flawless): Although the diamond is flawless inside, there are very small flaws on the outside that can be removed by re-polishing.

3. VVS (Very Slightly Slightly Stained): It is divided into two levels, VVS1 and VVS2. It is difficult for diamond graders to find extremely tiny or inconspicuous flaws under a 10x magnifying glass.

4. VS (slightly flawed): It is divided into VS1 and VS2. Diamond graders use a 10x magnifying glass to determine the size, quantity and location of flaws between difficult to determine and somewhat easy to determine.

5. SI (Slightly Incomplete): SI1 and SI2 are two grades. Significant flaws are easily visible to diamond graders under a 10x magnifying glass. SI2 diamonds have inclusions visible to the naked eye when viewed from the pavilion side.

6. I (defect grade): divided into three levels: I1, I2 and I3. I1: It is obvious to the diamond grader under a 10x magnifying glass, but it is difficult to observe from the crown with the naked eye. The internal defects do not affect its brightness; I2: The internal defects are large and numerous, visible to the naked eye, and affect the brightness; I3: The internal defects are extremely obvious and affect the brightness and transparency of the diamond.

Diamond purity is divided into LC (flawless), VVS1-VVS2 (very slightly flawed), VS1-VS2 (defective), SI1-SI2 (small flawed), P1 (small flower), P2 (medium flower), P3 (large flower). Diamond is a natural mineral, which will contain some other minerals or cracks and other natural flaws. The fewer these inclusions, the rarer and more valuable they are. Therefore, according to the size, quantity, color, position and characteristics of its inclusions, diamonds are divided into LC, VVS, VS, SI, P, these 5 types, and these 5 types belong to the level of diamond purity, which can also be divided into 10 small levels. The purity of diamonds is different in different levels. The highest level is LC, which is a very high level of diamonds, both in terms of money and in terms of manpower. No matter how perfect a diamond is, there will be impurities. Although diamonds contain impurities, these impurities not only do not affect the beauty of diamonds, but make diamonds more beautiful. It is precisely these impurities that constitute the standard of diamond purity. Judging its purity based on the amount of impurities is one of the criteria for judging the quality of the diamond.