The Collaborative International Dictionary of English v.0.48:

Lapidary \Lap"i*da*ry\, n.; pl. Lapidaries. [L. lapidarius,
   fr. lapidarius pertaining to stone: cf. F. lapidaire.]
   1. An artificer who cuts, polishes, and engraves precious
      stones; hence, a dealer in precious stones.
      [1913 Webster]

   2. A virtuoso skilled in gems or precious stones; a
      connoisseur of lapidary work.
      [1913 Webster]

   Lapidary's lathe, Lapidary's mill, Lapidary's wheel, a
      machine consisting essentially of a revolving lap on a
      vertical spindle, used by a lapidary for grinding and
      polishing.
      [1913 Webster]