- An amorphous, inorganic substance made by fusing silica (silicon dioxide) with a basic oxide; generally transparent but often translucent or opaque. Its characteristic properties are its hardness and rigidity at ordinary temperatures, its capacity for plastic working at elevated temperatures, and its resistance to weathering and to most chemicals except hydrofluoric acid. Used for both utilitarian and decorative purposes, it can be formed into various shapes, colored or decorated. Glass originated as a glaze in Mesopotamia in about 3500 BCE and the first objects made wholly of glass date to about 2500 BCE.
- Small squares of various hard materials used by the ancient Romans possibly for such purposes as reckoning and gaming.
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This object was included in the following exhibitions:
Shifting Sands: Roman Glass in the Bryn Mawr College Collections
Bryn Mawr College
, Oct 15, 2007 – May 30, 2008
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This object is a member of the following portfolios: