Glass Dictionary

These terms and their French and Italian equivalents, pâte de verre and pasta vitrea, have been used since at least the 17th century to describe the composition of small objects such as medallions and imitations of precious stones. However, their use to describe such objects is incorrect (they were made with molten glass, sometimes with a high lead content), and they should be restricted to objects of pâte de verre, as described in the next entry.

Alternate Spellings: 
glass paste
glass pastes