A brilliant is a diamond or other gemstone cut in a particular style with 57-58 facets so as to have exceptional brilliance. The word 'brilliant' is often used for diamonds cut in this style that are round in shape, also known as 'round brilliant cut' or 'standard brilliant cut.' The underside is conical, a shape that provides maximal light return through the top of the diamond.
A brilliant is a diamond or other gemstone cut in a particular style with 57-58 facets so as to have exceptional brilliance. The word 'brilliant' is often used for diamonds cut in this style that are round in shape, also known as 'round brilliant cut' or 'standard brilliant cut.' The underside is conical, a shape that provides maximal light return through the top of the diamond.
Source: Wikipedia "Brilliant (gemstone cut)" · CC BY-SA 4.0
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