al·a·bas·ter /ˈæləˌbæstɚ/
  雪花石膏
  Al·a·bas·ter n.
  1. Min. (a) A compact variety or sulphate of lime, or gypsum, of fine texture, and usually white and translucent, but sometimes yellow, red, or gray.  It is carved into vases, mantel ornaments, etc. (b) A hard, compact variety of carbonate of lime, somewhat translucent, or of banded shades of color; stalagmite.  The name is used in this sense by Pliny.  It is sometimes distinguished as oriental alabaster.
  2. A box or vessel for holding odoriferous ointments, etc.; -- so called from the stone of which it was originally made.
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  alabaster
       n 1: a compact fine-textured usually white gypsum used for
            carving
       2: a hard compact kind of calcite [syn: oriental alabaster, onyx
          marble, Mexican onyx]
       3: a very light white
  Alabaster
     occurs only in the New Testament in connection with the box of
     "ointment of spikenard very precious," with the contents of
     which a woman anointed the head of Jesus as he sat at supper in
     the house of Simon the leper (Matt. 26:7; Mark 14:3; Luke 7:37).
     These boxes were made from a stone found near Alabastron in
     Egypt, and from this circumstance the Greeks gave them the name
     of the city where they were made. The name was then given to the
     stone of which they were made; and finally to all perfume
     vessels, of whatever material they were formed. The woman
     "broke" the vessel; i.e., she broke off, as was usually done,
     the long and narrow neck so as to reach the contents. This stone
     resembles marble, but is softer in its texture, and hence very
     easily wrought into boxes. Mark says (14:5) that this box of
     ointment was worth more than 300 pence, i.e., denarii, each of
     the value of sevenpence halfpenny of our money, and therefore
     worth about 10 pounds. But if we take the denarius as the day's
     wage of a labourer (Matt. 20:2), say two shillings of our money,
     then the whole would be worth about 30 pounds, so costly was
     Mary's offering.