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The modern brilliant cut is based on optical calculations focusing on maximizing the beauty of a diamond that comes as a result of its brilliance and dispersion. The brilliant cut has a round outline and consists of a crown (32 facets + table) and a pavilion (24 facets + a possible culet).
Examination of the quality of a stone´s cut is based on comparing its ideal proportions with the symmetry of a mathematical model. Deviations from such a model are known as cut quality and are divided into several grades: Very good, good, fair, and poor. Some laboratories have the categories excellent or ideal cut for the best diamonds. The final state of a cut is called its finishing.
The effect “Heart and arrows“ occurs when the round diamond cut is of very high quality. One can then see the image of the above mentioned naming.
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