The Collaborative International Dictionary of English v.0.48:

Jeweler \Jew"el*er\ (j[=u]"[e^]l*l[~e]r or j[udd]"[e^]l*l[~e]r),
   n. [Cf. F. joaillier.]
   One who makes, or deals in, jewels, precious stones, and
   similar ornaments. [Written also jeweller.]
   [1913 Webster]

   Jeweler's gold. See under Gold.
      [1913 Webster]

WordNet (r) 3.0 (2006):

jeweler
    n 1: someone who makes jewelry [syn: jewelry maker, jeweler,
         jeweller]
    2: someone in the business of selling jewelry [syn: jeweler,
       jeweller]

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "jeweler":
   baker, bookdealer, bookseller, butcher, chandler,
   clothing merchant, confectioner, draper, drysalter, fishmonger,
   fishwife, florist, footwear merchant, fruiterer, furnisher,
   furrier, greengrocer, grocer, groceryman, haberdasher, hardwareman,
   ironmonger, liquor merchant, newsdealer, perfumer, poulterer,
   saddler, stationer, tobacconist, vintner, wine merchant