cameo-incrustationn. the art of producing bas-relief casts within a coating of flint-glass.
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cameo-incrustation1849
1849 A. PellattCuriosities of Glass Making 119Cameo Incrustation was unknown to the ancients, and was first introduced by the Bohemians, probably about a century since.
1874 E. H. KnightPract. Dict. Mech.Cameo-incrustation.