3ex refers to the cutting grade of diamond, 3 refers to cutting, polishing and symmetry, and ex is the English word "EXCELLENT", 3ex refers to cutting, polishing and symmetry, which is one of the cutting grades of diamond.

Cutting, polishing and symmetry have the following levels respectively.

EX = Excellent English: Perfect.

VG = very good

G = good

FR = fairness; Generally speaking, it actually means poor.

Poor: Very poor.

If the three indexes of cutting, polishing and symmetry are EX perfect, then this diamond is 3EX perfect cutting, which belongs to excellent cutting, and the diamond will be very shiny.

As far as the diamond itself is concerned, diamond 3ex is the top diamond cutting, which represents the standard that only 3% of the first-class high-quality diamonds can reach. This kind of cutting makes the diamond reflect almost all the light that enters the diamond, which fully shows the fire color of the diamond. Elegant and excellent cutting.

Do diamonds have to be 3EX cut?

The reason why so many people choose diamond jewelry with diamond cutting 3ex is because it can show the effect of eight hearts and eight arrows. Looking down from the front section of the diamond, we can see eight arrows with the same size and symmetrical shapes. Looking down from the diamond, we can see eight symmetrical hearts, so they are given a deeper meaning and are often used in wedding rings.

The cutting of diamonds determines the proportion of diamonds and ultimately the fire color of diamonds. If you want diamonds to be full of fire, you must choose the best cut, that is, the perfect cut of three EX.

In the 4C standard of diamond, cutting is directly affected by human factors, and diamond cutting has a very critical influence on the brightness, fire color and flash of diamond. Good cutting can give the diamond soul and directly affect the brilliance of the diamond. Even if the color and clarity of the diamond are very high, if the cutting is average or poor, then the brilliance of the diamond will not be satisfactory.

Choosing the diamond grade can be general, and cutting should try to pursue the good, at least above VG. When choosing a large carat diamond, you can pursue 3EX (the cutting ratio can try to pursue EX, and the other two can choose a slightly lower one), of course, the price is not low.