The term “diamond cut” refers to the way the diamond is proportioned, with consideration given to depth, width, symmetry, and facet uniformity, as these factors greatly impact the diamond’s brilliance and ability to reflect light effectively.
Ideally, a well-cut diamond ensures that light enters through the crown, bounces off the pavilion, and reflects out of the crown, showcasing stunning brilliance and a fiery appearance.
On the other hand, shallow cut diamonds allow light to escape from the bottom, resulting in a lack of light play and making them appear dull and glassy.
A deep diamond cut diminishes the brilliance and sparkle of the diamond.
| GIA Cut Scale | |
|---|---|
Excellent | 
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Very good | 
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Good | 
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Fair | 
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Poor | 
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When it comes to judging the cut of a diamond, experts use a rating system that ranges from Excellent to Poor.
To assess the cut grade, the Gemological Institute of America (GIA) factors in various aspects such as brightness, fire, and scintillation.
Diamonds with an Excellent cut rating typically display superior brilliance and excellent light performance, while diamonds with a Poor rating may lack luster and appear unimpressive.
The cut of a diamond is a critical factor in determining its overall beauty and value.
There are two basic diamond cuts: brilliant cut and step cut.
Brilliant cut diamonds have triangular or kite-shaped facets. They beam with exceptional brilliance and sparkles. The most popular brilliant cut diamond shapes are round cut, princess cut, cushion cut, radiant cut, pear cut, oval cut, marquise cut, heart brilliant cut, and trilliant cut.
Step cut diamonds are square or rectangular, with square or rectangular shaped facets that are parallel lines resembling steps. They radiate long, dramatic flashes of light. The most popular step cut diamond shapes are emerald cut, asscher cut and baquette cut.
