Enamelled glass in the context of "Vitreous enamel"

Stained glass refers to coloured glass as a material or art and architectural works created from it. Although it is traditionally made in flat panels and used as windows, the creations of modern stained glass artists also include three-dimensional structures and sculpture. Modern vernacular usage has often extended the term "stained glass" to include domestic lead light and objets d'art created from glasswork, for example in the famous lamps of Louis Comfort Tiffany.

As a material stained glass is glass that has been coloured by adding metallic salts during its manufacture. It may then be further decorated in various ways. The coloured glass may be crafted into a stained-glass window, say, in which small pieces of glass are arranged to form patterns or pictures, held together (traditionally) by strips of lead, called cames or calms, and supported by a rigid frame. Painted details and yellow-coloured silver stain are often used to enhance the design. The term stained glass is also applied to enamelled glass in which the colors have been painted onto the glass and then fused to the glass in a kiln.

Stained glass refers to coloured glass as a material or art and architectural works created from it. Although it is traditionally made in flat panels and used as windows, the creations of modern stained glass artists also include three-dimensional structures and sculpture. Modern vernacular usage has often extended the term "stained glass" to include domestic lead light and objets d'art created from glasswork, for example in the famous lamps of Louis Comfort Tiffany.

As a material stained glass is glass that has been coloured by adding metallic salts during its manufacture. It may then be further decorated in various ways. The coloured glass may be crafted into a stained-glass window, in which small pieces of glass are arranged to form patterns or pictures, held together (traditionally) by strips of lead, called cames or calms, and supported by a rigid frame. Painted details and yellow-coloured silver stain are often used to enhance the design. The term stained glass is also applied to enamelled glass in which the colors have been painted onto the glass and then fused to the glass in a kiln.

Art glass is a subset of glass art, this latter covering the whole range of art made from glass. Art glass normally refers only to pieces made since the mid-19th century, and typically to those purely made as sculpture or decorative art, with no main utilitarian function, such as serving as a drinking vessel, though of course stained glass keeps the weather out, and bowls may still be useful.

The term is most used of American glass, where the style is "the logical outcome of the American demand for novelty during the 19th century and was characterized by elaborate form and exotic finish", but not always the highest quality of execution. There was a great interest in complex colour effects and painted enamelled glass. For art historians the "art glass" phase replaced the "Brilliant Period" of High-Victorian heavy decoration, and was in turn was replaced around 1900 by Art Nouveau glass, but the term may still be used for marketing purposes to refer to contemporary products. In fact the "Brilliant Period" style, which relied on deeply cut glass, continued to be made until about 1915, and sometimes thereafter.

Venetian glass (Italian: vetro veneziano) is glassware made in Venice, typically on the island of Murano near the city. Traditionally it is made with a soda–lime "metal" and is typically elaborately decorated, with various "hot" glass-forming techniques, as well as gilding, enamel, or engraving. Production has been concentrated on the Venetian island of Murano since the 13th century. Today Murano is known for its art glass, but it has a long history of innovations in glassmaking in addition to its artistic fame—and was Europe's major center for luxury glass from the High Middle Ages to the Italian Renaissance. During the 15th century, Murano glassmakers created cristallo—which was almost transparent and considered the finest glass in the world. Murano glassmakers also developed a white-colored glass (milk glass called lattimo) that looked like porcelain. They later became Europe's finest makers of mirrors.

During the Early Middle Ages, Venice was originally controlled by the Eastern Roman Empire before eventually becoming an independent city state. It flourished as a trading center and seaport in the High Middle Ages. Its connections with the Middle East helped its glassmakers gain additional skills, as glassmaking was more advanced in areas such as Syria and Egypt. Although Venetian glassmaking in factories existed as far back as the eighth century, it became concentrated in Murano by law beginning in 1291, in part because glass factories often caught fire, and moving all of them to one island removed much of the possibility of a major fire disaster for the rest of the city. Another reason for moving the glassmakers to Murano was that Venetian glassmakers developed secret recipes and methods for making glass, and the concentration of Venice's glassmaking on the island of Murano enabled better control of those secrets.

Islamic glass is glass made in the Islamic world, especially in periods up to the 19th century. It built on pre-Islamic cultures in the Middle East, especially ancient Egyptian, Persian and Roman glass, and developed distinct styles, characterized by the introduction of new techniques and the reinterpreting of old traditions. It came under European influence by the end of the Middle Ages, with imports of Venetian glass documented by the late 15th century.

It rarely has religious content, other than inscriptions, although the mosque lamp was mainly used in religious contexts, to light mosques, but it uses the decorative styles of Islamic art from the same times and places. The makers were not necessarily Muslims themselves.

Painted glass refers to two different techniques of decorating glass, both more precisely known by other terms. Firstly, and more correctly, it means enamelled glass, normally relatively small vessels which have been painted with preparations of vitreous enamel, and then fixed by a light firing to melt them and fuse them to the glass surface.

Secondly it refers to stained glass, used for windows. Here the design is made up using sheets of coloured glass, cut to shape and held in place by lead. The painting is the final stage, typically only in black. The paint is usually not fused to the flat glass by firing, but if it is, it is still called "stained glass".

An Imperial Eagle beaker (German: Reichsadlerhumpen), or eagle glass, was a popular drinking vessel from the 16th until the late 18th century in the Holy Roman Empire. The enamelled glass was decorated with a double-headed eagle, usually in the shape of a Quaternion Eagle. The Reichsadler means "Imperial Eagle" or double-headed eagle which was the emblem of the empire, while "humpen" refers to a cylindrical drinking glass. These beakers became the essential medium to represent the most popular explanatory model for the emergence of the Empire: the quaternion theory as represented by Hans Burgkmair.

The Imperial Eagle beakers showed the solidarity between the owner and the Empire and were very popular because of their decorativeness and luminous colors. But these drinking vessels were also valued for their generous size. Equally popular were the electors' beakers, which were decorated with illustrations of the emperor and electors as the most important representatives of the Empire.

The "Luck of Edenhall" is an enamelled glass beaker that was made in Syria or Egypt in the middle of the 14th century, elegantly decorated with arabesques in blue, green, red and white enamel with gilding. It is now in the Victoria and Albert Museum in London and is 15.8 cm high and 11.1 cm wide at the brim. It had reached Europe by the 15th century, when it was provided with a decorated stiff case in boiled leather with a lid, which includes the Christian IHS; this no doubt helped it to survive over the centuries.

The beaker is now known to be an exceptionally fine and pristine example of 14th-century luxury Islamic glass. The antiquity of the legend surrounding it has not been determined. A number of rare objects owned by families in the North of England were known as "lucks"; the glass is first documented, and named as the "Luck of Edenhall", in 1677 in the will of Sir Philip Musgrave.