Amethyst is a violet stone from quartz widely used in jewellery. The name came from ancient Greek amethystos which means not intoxicated there is a belief that they protect its owner from drunkenness. In ancient Greek times they used to decorate drinking vessel with amethyst in order to prevent intoxication. Amethyst is a semiprecious stone and is the traditional birthstone for February.
Quartz (sio2) and iron impurities are the main reason for purple or violet colour of amethyst and some trace elements which result in complex crystal lattice substitutions. They are hard in nature as same as quartz hence suitable to the use in jewellery.Amethyst occurs in primary hues from a light pinkish violet to a deep purple. Amethyst may exhibit one or both secondary hues, red and blue. The best varieties of amethyst can be found Siberia, Sri Lanka, Brazil and the far East.