* the likeness.
  26  10:1  Ex 24:10  Job 37:22  Re 4:3,6  21:11 
 * crystal.
   The Hebrew {kerach,} which generally denotes ice, doubtless
   here signifies crystal, ([krystallos,] from [kryos,] cold,
   ice, and [stellomai,] to concrete,) as it is rendered by the
   LXX. and Vulgate.  It is a very large class of silicious
   minerals, hard, pellucid, naturally colourless, of regularly
   angular figures, and of simple plates; not flexible, nor
   elastic, but giving fire with steel; not fermenting by acid
   menstrua, but calcinable in a strong fire.  There are three
   orders of pure crystal:  the first is perfect columnar
   crystals, with double pyramids, of eighteen planes, in an
   hexangular pyramid at each end; the second is that of perfect
   crystals, without a column, of twelve or sixteen planes, in
   two hexangular pyramids:  and the third is that of imperfect
   crystals, with single pyramids, of ten or twelve planes, in an
   hexangular or pentangular column.  Terrible crystal seems to
   denote that which was well cut and polished, vividly
   refracting the rays of light.