What is the highest grade of diamond?

Diamonds with high grades have large weight, large volume, and ideal cutting. They can reflect fire colors. The clarity is FL, IF, VVS, VS, SI, and I from high to low. The colors are D, E, F, G-H, I-J, K-M, and N-Z.

Diamond grade

Diamond grading needs to be comprehensively considered from four aspects: weight, cutting, clarity, and color. The common unit of diamond weight is carat. Under the same conditions of color, cutting, and clarity, the heavier the diamond weight, the larger the volume, and the more valuable it is.

Cutting is the only human factor that determines the grade of a diamond. From low to high, it can be divided into poor cut, general cut, very good and ideal cut. A good cut can reflect the brightness and fire color of the diamond. Clarity from low to high is Level I, SI, VS, VVS, IF, FL.

Diamonds are divided into colorless diamonds and colored diamonds. Color diamonds are the highest grade with pure pink diamonds, while colorless diamonds are rare and colorless D-grade from high to low; colorless E-grade, F-grade; near colorless G-H-grade, I-J-grade; K-M-grade and N-Z-grade with darker colors.