, 2020). This kind of raises in both of those peak absorption cross portion and width of the 450 nm absorption band much more than linearly raise the energy of the chromophore with concentration. Other chromophores in natural corundum do not clearly show these variations and so show a constant https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share