The crimson-purple color is mainly because of the absorption by the bigger particles though the inexperienced coloration is attributed to the light scattering by colloidal dispersions of Ag nanoparticles having a measurement > 40 nm. The Lycurgus cup is identified as among the oldest artificial nanomaterials [one]. A similar impact https://www.directivepublications.org/journal-of-applied-nanoscience/