amethyst

/ˈæm.ə.θɪst/
/ˈæm.ə.θɪst/

noun

  1. A transparent purple variety of quartz, used as a gemstone.

  2. A purple colour.

  3. The purple tincture when emblazoning the arms of the English nobility.

adjective

  1. Having a colour similar to that of the gemstone