Definitions for "Art glass"
Decorative glass, which may or may not have a function, but which is essentially individually hand-blown, often as one-off or limited edition pieces. Sometimes referred to as Studio glass
The broad and tolerant term which embraces a vast assortment of glass technique and colors, made from about 1880 to as late a period as the early 1930's.
A general term for late 19th and early 20thC glasswork produced principally for decorative effect, and including AGATE, ALEXANDRITE and TORTOISESHELL GLASS.