Visually there is no difference between the Luxe and Aterna. Next to a diamond of similar quality, it would be challenging to distinguish a visual difference between the stones. The main difference would be hardness as the Luxe rates in at 9.1Mohs and the Aterna at 9.5Mohs (2nd hardest gem in the world). At this impressive hardness, Aterna is guaranteed to not micro-scratch, dull and fade for the life of the stone.