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Cut, more than any other quality aspect, gives the diamond its
sparkle. A diamond gets its brilliance and scintillation from the angle of its
facets. When all the angles are correct, the maximum amount of light is
dispersed back through the diamonds top facets.
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Polish is a measure of the smoothness of a diamonds facets; a
diamond with a high polish grade will appear very crisp and have a vivid
sparkle. Diamonds with a lower polish grade will appear dull and blurred.
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Symmetry is a grade of how a diamonds facets are shaped and
aligned. When a diamond has a high symmetry each facet is perfectly aligned; as
light enters, it is reflected back properly and gives the diamond a very bright
sparkle and a strong appearance of fire.
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