Amethyst is purple quartz. The birthstone of February. A myth of Amethyst is that because of its grape color it has the power to ward off drunkenness.The most important source of Amethyst is Brazil. Bolivia is better known for having the only natural deposits of Ametrine-a combination of amethyst and citrine. Amethyst is mostly true purple. Some can be highlighted by violet or a bluish purple. Most Amethyst is not enhanced. Although almost all citrine is heated Amethyst. Amethyst is durable. It has a hardness of 7. Wipe with a soft cloth.