Diamond Education | Malabar Gold and Diamonds

Diamond Cut

According to gemologists, cut is the main aspect of a diamond. A cut of a diamond forms it’s facets, brings evenness and verifies the brilliance of a diamond. A well cut diamond allows light to penetrate and pass through it thereby reflecting much light and making it more sparkling.The more the cut is brilliant the more luminous is the diamond.The beauty of a diamond is solely dependent on the cut. In order to understand the cut of a diamond, first the concept of brilliance, fire and scintillation should be clear.

What is Brilliance, Fire and Scintillation?
Brilliance, fire and scintillation are the sole attributes of the cut of a diamond that contributes to its fiery sparkle. The primary factors makes a vast difference altogether in a diamond.

Brilliance - The brilliance factor affects the brightness of the diamond. The white light that enters into the diamond and reflects or bounces back from the outer surface of the diamond is called the brilliance.

Fire - The vibrant spectral color of a diamond when exposed to light is the fire factor of a diamond. When the white light reflects back from the inner surface of the diamond towards the center of the diamond the fire factor (rainbow color) settles on the top surface of the diamond.

Scintillation - The flashes of light which occurs when a diamond is moved or tilted sideways. When light passes through the diamond and reflects from the inner surface towards the center, the light which bounces back is scintillation.


According to G.I.A. Grading scale, cut of a diamond is categorized under Excellent, Very Good and Good.

Excellent- An excellent cut diamond has maximum brilliance and fire and reflects light.

Very Good - A very good cut diamond reflects most of the light and give out good quality diamonds.

Good - This cut reflects most of the light and grades a diamond as an average one but is considered a diamond of higher grades.

Fair - Though, this cut allows light to enter the diamond but the brilliance and sparkle is not much.

Poor - This cut do allow light to pass through it but is regarded as dull.

Pearl Education

The luminescent factor of diamond is also based on the three different types of cuts.

The three types of cut are -

Shallow cut- Fairly transparent but with a noticeable lack of sparkle.

Deep cut- The cut is excellent and emits the highest level of brilliance.

Ideal cut- The brilliance level is a bit dull.

Pearl Education
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