, 2020). These will increase in both equally peak absorption cross section and width with the 450 nm absorption band over linearly raise the toughness from the chromophore with concentration. Other chromophores in natural corundum will not demonstrate these alterations and thus exhibit a continuing power with concentration. Pukhraj stones https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share