The cut quality of a diamond is a crucial factor that can affect its brilliance, appearance, and value. The cut of a diamond should be proportional and symmetrical for it to reflect and refract light effectively. The rough stone will be cut by a diamond cutter to enhance its appearance and elevate its brilliance. It is important for you to know about this important quality parameter when getting your diamond rings or other pieces of jewelry.
How The Cut Is Graded?
Based on the symmetry, precision, and proportion, the cut quality of a diamond will be assigned different grades by gemologists. The grades assigned by the GIA to determine the cut quality of a diamond include:
- Excellent
- Very good
- Good
- Fair
- Poor
If the cut is precise, then the grade “excellent” will be given to the diamonds. Diamonds with poor cut quality cannot reflect light properly, so they will be dull and lifeless.
The Importance Of Diamond Cut Quality
The cut is the most important quality attribute among the 4Cs of diamonds. If you want a diamond that sparkles well, then it is better to give more importance to the diamond cut instead of other parameters like color, clarity, and carat. The cut quality can have a direct impact on the brilliance, sparkle, and scintillation of diamonds that determine the overall beauty of these stones.
The brilliance of a diamond indicates the intensity of white light reflected back through the crown of the diamond. Brilliance is one of the most significant factors that affect the beauty of diamonds.
Dispersion, which is also called fire, is the white light that is refracted inside the diamond. This light will be then reflected out of the diamond in the colors of the visible spectrum.
Scintillation refers to the sparkle of a diamond. A diamond with facets that are cut precisely will reflect bursts of light when it is moved or the light around it moves.
The Depth Of A Diamond
Another important factor that determines the cut of a diamond is its depth. Diamonds with an ideal cut will exhibit the most sparkle and brilliance, as they can efficiently reflect light. But when the cut is too shallow or too deep, the light won’t be refracted and reflected well thereby reducing the shine of the stone.
The cut quality is important for both mined and lab grown diamonds. Therefore, it is important to pay attention to this attribute irrespective of the type of diamond you are getting.