Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between 750 and 850 °C. The powder melts, flows, and then hardens to a smooth, durable vitreous coating. The word comes from the Latin vitreum, meaning "glass".
Cloisonné is an ancient technique for decorating metalwork objects with colored material held in place or separated by metal strips or wire, normally of gold. In recent centuries, vitreous enamel has been used, but inlays of cut gemstones, glass and other materials were also used during older periods; indeed cloisonné enamel very probably began as an easier imitation of cloisonné work using gems. The resulting objects can also be called cloisonné. The decoration is formed by first adding compartments to the metal object by soldering or affixing silver or gold as wires or thin strips placed on their edges. These remain visible in the finished piece, separating the different compartments of the enamel or inlays, which are often of several colors. Cloisonné enamel objects are worked on with enamel powder made into a paste, which then needs to be fired in a kiln. If gemstones or colored glass are used, the pieces need to be cut or ground into the shape of each cloison.
Gothic art was a style of medieval art that developed in Northern France out of Romanesque art in the 12th century AD, led by the concurrent development of Gothic architecture. It spread to all of Western Europe, and much of Northern, Southern and Central Europe, never quite effacing more classical styles in Italy. In the late 14th century, the sophisticated court style of International Gothic developed, which continued to evolve until the late 15th century. In many areas, especially Germany, Late Gothic art continued well into the 16th century, before being subsumed into Renaissance art. Primary media in the Gothic period included sculpture, panel painting, stained glass, fresco and illuminated manuscripts. The easily recognizable shifts in architecture from Romanesque to Gothic, and Gothic to Renaissance styles, are typically used to define the periods in art in all media, although in many ways figurative art developed at a different pace.
Filigree is a form of intricate metalwork used in jewellery and other small forms of metalwork.
The Stavelot Triptych is a medieval reliquary and portable altar in gold and enamel intended to protect, honor and display pieces of the True Cross. Created by Mosan artists—"Mosan" signifies the valley of the Meuse river—around 1156 at Stavelot Abbey in present-day Belgium. The work is a masterpiece of Romanesque goldsmith's work and is today in the Morgan Library & Museum in New York City.
Champlevé is an enamelling technique in the decorative arts, or an object made by that process, in which troughs or cells are carved, etched, die struck, or cast into the surface of a metal object, and filled with vitreous enamel. The piece is then fired until the enamel fuses, and when cooled the surface of the object is polished. The uncarved portions of the original surface remain visible as a frame for the enamel designs; typically they are gilded in medieval work. The name comes from the French for "raised field", "field" meaning background, though the technique in practice lowers the area to be enamelled rather than raising the rest of the surface.
Basse-taille (bahss-tah-ee) is an enamelling technique in which the artist creates a low-relief pattern in metal, usually silver or gold, by engraving or chasing. The entire pattern is created in such a way that its highest point is lower than the surrounding metal. A translucent enamel is then applied to the metal, allowing light to reflect from the relief and creating an artistic effect. It was used in the late Middle Ages, and then again in the 17th century.
The Virgin of Jeanne d'Evreux, is a Gothic sculpture created sometime between the years 1324 and 1339. This figure stands at 68 cm tall and is made from gilded silver, stones, pearls, and the earliest dated French translucent enamels. The piece itself was donated to the abbey of Saint-Denis by Jeanne d'Evreux in 1339 as inscribed in the pedestal. Currently, this sculpture is on display within the Louvre in France.
The Dunstable Swan Jewel is a gold and enamel brooch in the form of a swan made in England or France in about 1400 and now in the British Museum, where it is on display in Room 40. It was excavated in 1965 on the site of Dunstable Friary, and is presumed to have been intended as a livery badge given by an important figure to his supporters; the most likely candidate is probably the future Henry V of England, who was Prince of Wales from 1399.
The Holy Thorn Reliquary was probably created in the 1390s in Paris for John, Duke of Berry, to house a relic of the Crown of Thorns. The reliquary was bequeathed to the British Museum in 1898 by Ferdinand de Rothschild as part of the Waddesdon Bequest. It is one of a small number of major goldsmiths' works or joyaux that survive from the extravagant world of the courts of the Valois royal family around 1400. It is made of gold, lavishly decorated with jewels and pearls, and uses the technique of enamelling en ronde bosse, or "in the round", which had been recently developed when the reliquary was made, to create a total of 28 three-dimensional figures, mostly in white enamel.
Limoges enamel has been produced at Limoges, in south-western France, over several centuries up to the present. There are two periods when it was of European importance. From the 12th century to 1370 there was a large industry producing metal objects decorated in enamel using the champlevé technique, of which most of the survivals, and probably most of the original production, are religious objects such as reliquaries.
The Royal Gold Cup or Saint Agnes Cup is a solid gold covered cup lavishly decorated with enamel and pearls. It was made for the French royal family at the end of the 14th century, and later belonged to several English monarchs before spending nearly 300 years in Spain. It has been in the British Museum since 1892, where it is normally on display in Room 40, and is generally agreed to be the outstanding surviving example of late medieval French plate. It has been described as "the one surviving royal magnificence of the International Gothic age". According to Thomas Hoving, former director of the Metropolitan Museum of Art in New York, "of all the princely jewels and gold that have come down to us, this is the most spectacular—and that includes the great royal treasures."
A chasse, châsse or box reliquary is a shape commonly used in medieval metalwork for reliquaries and other containers. To the modern eye the form resembles a house, though a tomb or church was more the intention, with an oblong base, straight sides and two sloping top faces meeting at a central ridge, often marked by a raised strip and decoration. From the sides there are therefore triangular "gable" areas.
Plique-à-jour is a vitreous enamelling technique where the enamel is applied in cells, similar to cloisonné, but with no backing in the final product, so light can shine through the transparent or translucent enamel. It is in effect a miniature version of stained-glass and is considered very challenging technically: high time consumption, with a high failure rate. The technique is similar to that of cloisonné, but using a temporary backing that after firing is dissolved by acid or rubbed away. A different technique relies solely on surface tension, for smaller areas. In Japan the technique is known as shotai-jippo, and is found from the 19th century on.
In 1898, Baron Ferdinand de Rothschild bequeathed to the British Museum as the Waddesdon Bequest the contents from his New Smoking Room at Waddesdon Manor. This consisted of a wide-ranging collection of almost 300 objets d'art et de vertu, which included exquisite examples of jewellery, plate, enamel, carvings, glass and maiolica. One of the earlier objects is the outstanding Holy Thorn Reliquary, probably created in the 1390s in Paris for John, Duke of Berry. The collection is in the tradition of a schatzkammer, or treasure house, such as those formed by the Renaissance princes of Europe; indeed, the majority of the objects are from late Renaissance Europe, although there are several important medieval pieces, and outliers from classical antiquity and medieval Syria.
The Fieschi Morgan Staurotheke is a small reliquary designed to hold a relic of the true cross, it is 1 1/16 x 4 1/16 x 2 13/16 inches overall with lid. It is an example of Byzantine enameling. The box is dated to 843. Both dates hover around the second wave of Byzantine Iconoclasm from 814 to 842, allowing this piece to become a lens into the post iconoclastic art. These reliquaries doubled as an icon in style and purpose. The physical material of icons and the content within the reliquary were believed to contained a spirit or energy. It was believed that reliquaries contained great power, thus explains its preservation throughout the years. There are numerous theories of where this piece was created and its movement. It's currently on display at the Metropolitan Museum.
The Beresford Hope Cross is a 9th-century Byzantine reliquary cross with cloisonné enameling. It was intended to be worn as a pectoral crucifix, perhaps holding a fragment of the True Cross in the compartment inside. The cross is thought to have been made in southern Italy around the end of Byzantine iconoclasm, between 843 and the mid tenth century. It has been held by the Victoria and Albert Museum since 1886.
The Reliquary Shrine is an especially complex 14th century container for relics, now in The Cloisters, New York. It is made from translucent enamel, gilt-silver and paint, and dated to c 1325–50. Although first mentioned in a convent in Budapest, its style and influences betrays French craftsmanship. It has been proposed to be attributed by the Met to Jean de Toul written Jehan de Touyl in one French source from 1328, a French goldsmith about whom little is known, but who is associated with a small number of works with similar stylistic characteristics.
The Orsini Altarpiece, Orsini Polyptych or Passion Polyptych is a painting produced at an unknown location by Simone Martini for private devotion by a cardinal of the Orsini family. Its precise date is still under discussion. It was taken to France very early in its lifespan and formed a major influence on late medieval French artists. It is now split between the Louvre, the Royal Museum of Fine Arts, Antwerp and the Gemäldegalerie.
Hermann Ruissel or Herman Ruissel was a medieval Parisian goldsmith who crafted jewelry for the King of France and other persons of high rank.
