Really long lasting materials, most effective for gem safety (prongs do not bend or crack easily) Is often expensive As indicated previously, Along with the absorption cross part boost with concentration, the FWHM of the 450 nm peak also will increase significantly with concentration. Yellow Sapphire stone, also called Pukhraj https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share