matted glass

from The Collaborative International Dictionary of English v.0.48

Matted \Mat"ted\, a. [See {Matte}.]
   Having a dull surface; lusterless; unburnished; same as
   {matte}; as, matted gold leaf or gilding.
   [1913 Webster]

   {Matted glass}, glass ornamented with figures on a dull
      ground.
      [1913 Webster]