H refers to the color level, vs refers to the clarity level, ex refers to the cut level, and diamond h vs 3ex means to have perfect color, clarity, and cut. Diamond color grades are D, E, F, etc., and cut grades are ex, vg, f, and p.
The 3ex of a diamond refers to the three aspects of diamond cutting, including cutting and grinding, polishing, and symmetry. Its grade can be divided into ex, vg, f, and p from good to bad. Among them, ex means perfect, and 3ex is the diamond that represents the most perfect cutting.
The h of a diamond refers to the color grade. Color is a key factor that affects the value of a diamond. It can be divided into 23 grades according to different whiteness, including d-grade, e-grade, f-grade, g-h-grade, i-j-grade, and k-m-grade. Among them, h-colored diamonds will look a little yellow, but they still have high value.
The vs of a diamond refers to the clarity, that is, the cleanliness of the diamond's interior. This is an indicator to evaluate diamond defects. The grade can be divided into FL, IF, VVS, VS, SI, and P. Diamonds that have reached the vs grade can only see very small flaws under ten times magnifying glass, and the clarity is very high.