Diamond cutting includes three aspects: cutting ratio, symmetry, and polishing. Diamond cutting grades are divided into EX (Excellent), VG (Very good), G (Good), F (Faint), and P (Poor).
Ideal Cut (EXCELLENT):
Very Good Cut:
Good Cut:
General Cutting (FAIR):
Poor Cut (POOR):
The most recommended "3EX" cut in the industry means that Cut Grade, Polish, and Symmetry are all the best Excellent grades.