How to buy diamonds? Clarity! Clarity is another important factor that determines the value of diamonds. my country’s diamond grading system standard GB/T16554-2003 divides the clarity levels into LC, VVS1-2, VS1-2, SI1-2, P1-3, a total of five Big level, 10 small levels. Save me how to buy diamonds? Clarity! Clarity is another important factor that determines the value of diamonds. my country’s diamond grading system standard GB/T16554-2003 divides the clarity levels into LC, VVS1-2, VS1-2, SI1-2, P1-3, a total of five Big level, 10 small levels. In addition to my country's standards, there are currently many international clarity classification systems. Such as: GIA (Gemological Institute of America), HRD (Belgian High-class Diamond Council), CIBJO (International Jewelry Federation) and other systems. Regardless of the system, the clarity grading of a diamond is based on the diamond characteristics observed under a 10x magnifying glass. The following table shows the comparison of clarity grading by each grading agency: GIA diamond grading system: FL (flawless level): the diamond grader observes under a magnifying glass of 10 times, and the diamond is flawless on the inside and outside; IF (internally flawless level): inside the diamond No flaws, but there are very small external flaws that can be removed by repolishing; VVS (very slight flaws): It is divided into VVS1 and VVS2. It is difficult for a diamond grader to find very small or very small under a 10x magnifying glass. Obvious flaws. VS (micro-flaw level): Divided into two levels, VS1 and VS2, the size, number and location of flaws under a 10x magnifying glass are between difficult to determine and a certain degree of easy determination. SI (small flaw level): Divided into two levels SI1 and SI2, significant flaws, diamond graders can easily see under a 10x magnifying glass. When the SI2 diamond is viewed from the pavilion side, the inclusions are visible to the naked eye. I (defect level): I1, I2 and I3 are divided into three levels, I1: the diamond grader is obvious under a 10x magnifying glass, it is difficult to observe from the crown with the naked eye, and internal defects do not affect its brightness; I2: internal defects are large and many , Visible to the naked eye, and affect the brightness; I3: the internal flaws are extremely obvious, and affect the brightness and transparency of the diamond. Buying advice on GIA diamond clarity: Collective grade: FL, IF, VVS1, VVS2 Marriage grade: VVS1, VVS2, VS1, VS2 Pursuit of price-performance ratio: SI1-SI2 is the information about diamonds. It comes from the Internet. If there is something wrong, please forgive me. If you need a custom diamond setting, please visit the official website of jewelry setting. Jewelry setting will serve you wholeheartedly!