Knowledge

Amethyst produced in Uruguay has always been the highest shade of purple in amethyst. This purple is very dark, very delicate, with a Burgundy tinge. It is a must-have item in fine jewelry stores all over the world.

The color of amethyst is caused by mixing iron and being irradiated by gamma rays, and the charge transfer between Fe and O occurs in the [FeO4] color center formed by Fe3+ replacing Si4+. However, when heated to 300 ~ 400 ° C, the purple will fade into tan, brown.