The Collaborative International Dictionary of English v.0.48:
Glyptics \Glyp"tics\, n. [Cf. F. glyptique. See Glyph.] The art of engraving on precious stones. [1913 Webster]WordNet (r) 3.0 (2006):
glyptics n 1: the art of engraving on precious stones [syn: glyptics, lithoglyptics]