What is the most important factor when buying a Diamond cut or clarity?

I picked out Emerald 3.28 The color is H. The clarity is sI2.


Im so confused with picking out the right diamond.


Any info is appreciated.


Thank u|||Clarity. The cut just enhances the shine of the diamond, but if the clarity is not high there will not be much shine regardless of an excellent cut. Low clarity means a diamond will look dull even in highly lighted areas, as there are more obstructions when light shines through and reflects on the diamond.|||Clarity for sure, the clarity is what makes it super expensive!