favrile glass
/fəˈvriːl
/noun [mass noun]
A richly coloured iridescent glass, developed by L. C. Tiffany.A parlor, her readers learned, should contain ‘delicately upholstered furniture, the rare vase or bit of favrile glass.’
Origin
Late 19th century: formed as a trademark from the obsolete adjective fabrile 'of a craftsman'.