In simple words, diamond light performance can be defined as a simple term, which decries how the light gets reflected or leak out of the diamond. The light reflected from the diamond increases the appeal of the ring and makes it look bright. On the other hand, the light that leaks out from the center stone of a diamond usually remains unseen.
Diamonds with superior light performance have the unique ability to return most of the light that is entering them. So, these types of diamonds look a lot more sparkly and brilliant to the observer. One of the most important characteristics that determine the light performance of a diamond is its cut.
In addition to that, the setting of the diamond and the clarity of the stone are other two major factors that affect the light performance of the center stone of a diamond ring. Observing your diamond ring under different lighting conditions will help you to easily evaluate the light performance of a diamond.