Impurities in minerals including quartz crystal can lead it to glimpse pink (rose quartz) or violet (amethyst) but frequently the colour can be a results of how the electrons during the material take in light and isn't a selected indicator of purity. For those who or maybe a liked a https://blue-crystal-math14567.losblogos.com/29028305/not-known-details-about-blue-crystal-math