Detection: A known signature of the clarity enhanced diamonds, also known by GIA as the most distinctive characteristic of fracture filling and one of main the ways to recognize when a diamond was enhanced, is known as the “flash effect”.
This effect can carry one of a few different colors ranging from: Blue, purple, pink, green, and yellow.
These colors will mostly “look like” a trapped gas bubble inside of a diamond when being looked through a magnification of 10x.