am·e·thyst /ˈæməθəst, (ˌ)θɪst/
 紫水晶,紫石英


 Am·e·thyst
 1. Min. A variety of crystallized quartz, of a purple or bluish violet color, of different shades. It is much used as a jeweler's stone.
 Oriental amethyst, the violet-blue variety of transparent crystallized corundum or sapphire.
 2. Her. A purple color in a nobleman's escutcheon, or coat of arms.

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 amethyst
      adj : of a moderate purple color
      n : a transparent purple variety of quartz; used as a gemstone


 Amethyst
    one of the precious stones in the breastplate of the high priest
    (Ex. 28:19; 39:12), and in the foundation of the New Jerusalem
    (Rev. 21:20). The ancients thought that this stone had the power
    of dispelling drunkenness in all who wore or touched it, and
    hence its Greek name formed from _a_, "privative," and _methuo_,
    "to get drunk." Its Jewish name, _ahlamah'_, was derived by the
    rabbins from the Hebrew word _halam_, "to dream," from its
    supposed power of causing the wearer to dream.

      It is a pale-blue crystallized quartz, varying to a dark
    purple blue. It is found in Persia and India, also in different
    parts of Europe.