This name derives from the Ancient Greek “a-methustos (ἀ μέθυστος)”, meaning “drunkenness, no intoxicated”. Amethyst is a violet variety of quartz often used in jewelry. a reference to the belief that the stone protected its owner from drunkenness. The ancient Greeks and Romans wore amethyst and made drinking vessels of it in the belief that it would prevent intoxication. It is one of several forms of quartz. Amethyst is the traditional birthstone for February.