Glass blank

A glass blank is a piece of glass that requires additional decoration before it is considered finished. Types of decoration include cutting, engraving, acid-etching, gilding, and enameling. Often the term blank is used in reference to an uncut piece of glass that will be cut or engraved. "Blank" is used in the same way of pottery, especially porcelain, that was often decorated elsewhere, for example by hausmalers.