The average cut of the price of first-class diamonds is as follows: excellent: it means that only 3% of first-class high-quality diamonds can meet the "ideal" standard. This kind of cutting makes the diamond reflect almost all the light entering the diamond, which is an elegant and outstanding product in diamond cutting.

Very good: it represents about 65,438+05% of the diamond cut. The symmetrical cut ratio can make the diamond reflect the light of standard cut, but the price is slightly lower than the "ideal" cut diamond.

Good: It represents about 25% of diamond cutting. Its cut ratio is close to "very good", and the diamond reflects most of the brilliance that enters the diamond. Its price is much cheaper than VG.

Fair: It means that the diamond cutter with a roughness of 35% is still a high-quality diamond, but the light reflected by the diamond cutter is generally not as good as that of the G cutter.

Poor: This includes all diamonds that do not meet the general cutting standards. These diamonds are cut deep and narrow or shallow and wide, which is convenient for light to escape from the edge or bottom.