Really strong substance, greatest for gem protection (prongs usually do not bend or crack easily) Is often high-priced Exactly what is most unusual is this first cost transfer band of Ni3+ peaks is at four hundred nm, supplying sizeable absorption from 400 to 480 nm and therefore strong yellow coloration. https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share