Avery good cut diamondis one that has been cut in perfect proportion on all sides. These diamonds don't have to be shiny. Very good-cut Diamonds are similar to excellent-cut diamonds. When light passes through these diamonds, the light spreads everywhere because a large part of the light gets reflected through the diamond's table. 25% of the quality of a diamond depends on the cut, so we should pay attention to the cut while buying a diamond.
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