, 2020). These kinds of boosts in both equally peak absorption cross portion and width on the 450 nm absorption band in excess of linearly increase the strength in the chromophore with concentration. Other chromophores in natural corundum don't exhibit these changes and so show a continuing strength with concentration. https://dirstop.com/story20446764/the-definitive-guide-to-natural-yellow-sapphire-from-sri-lanka