Amethyst Crystals and Mineral SpecimensByminerals
Amethyst is one of the most valuable and well-known minerals and gems. Amethyst is the most famous gem in the world. This is the birthstone of February. It is the purple color of quartz that has been used in personal decoration for years. It is durable enough to be used in jewelry such as rings, bracelets, earrings, pendants, etc. Experts believe that its color is derived from iron.
In ancient times amethyst was thought to ward off intoxication. The color of some amethyst specimens from certain regions slowly fades when exposed to light for a long time. When heated above about 300-400 C, the amethyst loses its violet color and often turns yellow, orange, or brown.