, 2020). This kind of increases in the two peak absorption cross part and width with the 450 nm absorption band much more than linearly raise the energy from the chromophore with concentration. Other chromophores in natural corundum don't exhibit these modifications and thus show a continuing strength with focus. https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share