Diamond cut grade

Diamond cutters are divided into three aspects: cutting proportion, polishing, and symmetry. Internationally, each aspect is divided into five grades: Excellent, Very Good, Good, Fair, and Poor. The best diamond cutter needs to reach Excellent level in all three aspects. In the industry, diamond cutters of this level are referred to as 3EX for short.

Diamond cut grade

Diamond cutting is divided into three items: cutting proportion, polishing and symmetry. My country's national standard divides diamond cutting into three levels: Very Good, Good, and Fair. Internationally, each item is divided into Excellent, Very Good, Good, Fair, and Poor. Five levels.

The best grade among diamond cutters is Excellent. Among them, diamond cutters who have reached Excellent in all three items are the best. In the industry, diamonds of this cut grade are called "3EX" grade.

Diamond cutting is one of the 4C standards for measuring the value of diamonds, and cutting is also the only factor that can artificially affect diamond rings. Diamonds with fair cutting grade are more common in the market. This cut grade diamond is still a high-quality diamond, but the light reflected by the diamond will be relatively poor.