[1] : The Collaborative International Dictionary of English v.0.48

amethyst \am"ethyst\, f. ametiste, amatiste, f. am'ethyste,
   l. amethystus, fr. gr. ? without drunkenness; as a noun, a
   remedy for drunkenness, the amethyst, supposed to have this
   power; 'a priv. + ? to be drunken, ? strong drink, wine. see
   mead.
   1913 webster
   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.
      1913 webster

   oriental amethyst, the violet-blue variety of transparent
      crystallized corundum or sapphire.
      1913 webster

   2. her. a purple color in a nobleman's escutcheon, or coat
      of arms.
      1913 webster
see also:
mead oriental amethyst 

[2] : The Collaborative International Dictionary of English v.0.48

corundum \corun"dum\ k-oru^n"du^m, n.; pl. corundums
   k-oru^n"du^mz. also corindon. from hind. kurand
   corundum stone. min.
   the mineral alumina al2o3, as found native in a
   crystalline state. transparent varieties are used as
   gemstones, including sapphire, which is the fine blue
   variety; the oriental ruby, or red sapphire; the oriental
   amethyst, or purple sapphire; and adamantine spar, the
   hair-brown variety. it is the hardest substance found native,
   next to the diamond.
   1913 webster +pjc

   note: the name corundum is sometimes restricted to the
         non-transparent or coarser kinds. emery is a
         dark-colored granular variety, usually admixed with
         magnetic iron ore.
         1913 webster
see also:
corundums al2o3 sapphire oriental ruby oriental amethyst adamantine spar 
emery 

Oriental >> O Words
Oriental, definition of term: Oriental
oriental_pag1.html

Amethyst >> A Words
Amethyst, definition of term: Amethyst
amethyst_pag1.html