Refers to the angles and proportions of a diamond.
Nature determines so much about a diamond, but it takes a master cutter to reveal the stone’s true brilliance, fire and ultimate beauty.
Based on scientific formulas, a well-cut diamond will internally reflect light from one mirror-like facet to another and disperse and reflect it through the top of the stone. This results in a display of brilliance and fire, which places well-cut diamonds higher on the Diamond Quality Pyramid. Diamonds that are cut too deep or too shallow lose or leak light through the side or bottom, resulting in less brilliance and ultimately, value.
Cut also refers to shape, for example: round, square, pear, or heart shapes. Since a round diamond is symmetrical and capable of reflecting nearly all the light that enters, it is the most brilliant of all diamond shapes and follows specific proportional guidelines.
Non-round shapes, also known as “fancy shapes,” will have their own guidelines to be considered “well-cut.”
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