A white or clear glass to which a thin layer of colored glass is added on top
Natural pot-metal glass colored blue or red was too dark to transmit much light, so the medieval glazier hit on the technique of applying or "flashing" a thin layer of the colored glass on to a sheet of white glass, thus getting over the problem.
Glass objects dipped into molten glass to give them a fine outer layer, thinner than on cased glass, which is often in a contrasting colour. The flashing may be cut or ground away in a pattern to expose the layer underneath.
A type of glass where a layer of color is fused to the surface of another piece of glass. The base glass is usually clear but can be another color.
Glass that has two layers of glass, one thin and one thick of different colors.
Two-layered glass in which a top layer of a darker color is applied to a bottom layer of usually clear or light-colored glass.
Glass of one color dipped into molten glass of another color and then blown, creating a thin outer layer or casing.
A sheet of glass where one color is laid on top of another. Any color may be flashed on top of another provided the two are not mutually exclusive of light. Such glass is used extensively in etching, but it can be used as is for the particular hue it presents.
A type of flat, stained glass with a thicker layer of clear or light colored glass and a thin 'flashed' layer of darker colored glass.
