The Collaborative International Dictionary of English v.0.48:

Jasper \Jas"per\, n. [OE. jaspre, jaspe, OF. jaspre, jaspe, F.
   jaspe, L. iaspis, Gr. ?; cf. Per. yashp, yashf, Ar. yashb,
   yasb, yasf, Heb. y[=a]shpheh. Cf. Diaper.] (Min.)
   An opaque, impure variety of quartz, of red, yellow, and
   other dull colors, breaking with a smooth surface. It admits
   of a high polish, and is used for vases, seals, snuff boxes,
   etc. When the colors are in stripes or bands, it is called
   striped jasper or banded jasper. The Egyptian pebble is a
   brownish yellow jasper.
   [1913 Webster]

   Jasper opal, a yellow variety of opal resembling jasper.

   Jasper ware, a delicate kind of earthenware invented by
      Josiah Wedgwood. It is usually white, but is capable of
      receiving color.
      [1913 Webster]