The Collaborative International Dictionary of English v.0.48:

Glyptography \Glyp*tog"ra*phy\, n. [Gr. ? carved + -graphy: cf.
   F. glyptographie.]
   The art or process of engraving on precious stones. [R.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

glyptography
    n 1: carvings or engravings (especially on precious stones)
         [syn: glyptic art, glyptography]
    2: carving or engraving (especially on stones)