Lewis & Short

1. aurārĭus, a, um, adj. [aurum].

  1. I. Of or pertaining to gold, golden, gold-: statera, Varr. ap. Non. p. 455, 21: metalla, gold-mines, Plin. 37, 12, 74, § 193: fornax, for smelting gold, id. 34, 13, 34, § 132: negotium, Plaut. Bacch. 2, 2, 51: canon, a tax upon purchase and sale, Cod. 10, 47, 10; cf.: auraria pensitatio, ib. 11, 61, 2; and absol. auraria, ib. 12, 6, 29.
    Hence,
  2. II. Subst.
    1. A. aurārĭ-us, ii, m., a worker in gold, a goldsmith, Inscr. Orell. 3096.
    2. B. aurārĭa, ae, f.
        1. a. (Sc. fodina.) A gold-mine, Tac. A. 6, 19.
        2. b. A female worker in gold, or a golddealer, Inscr. Orell. 4065 (v. Orell. ad h. l.).