Lusters
Lusters are ceramic decorations made with metallic compounds that, when fired at low temperature on an already glazed piece, generate a shiny, metallic or iridescent finish. These compounds are usually based on salts of precious metals, such as gold, silver or copper, dissolved in an organic vehicle that burns during firing. The result is a thin, translucent layer of metal on the surface of the glaze, which produces golden, silver or iridescent reflections depending on the type of metal used and the kiln atmosphere.
The application of luster requires precision and care, since its success depends on the absolute cleanliness of the surface and the control of the kiln atmosphere. Once the luster has been applied, the piece is fired at low temperatures (between 700°C and 800°C), at which point the metallic salts decompose, leaving a thin metallic film attached to the glaze. This technique, which originated in 9th century Islamic ceramics, has been perfected throughout history, appearing in Renaissance majolica, Chinese and Japanese ceramics, as well as in contemporary high-end ceramic production.
Lusters can be used to highlight ornamental details, lettering, fine china flanges or decorative pieces, adding a touch of opulence and sophistication. Their fragility, however, means that some pieces require special care to prevent wear of the metallic layer.Interesting Fact
Islamic lusterware was an ingenious response to the religious restriction on the use of solid gold and silver in decoration, achieving the simulated luster of these metals without using them in large quantities.Helpful Tip
Make sure the part is perfectly clean and degreased before applying the polish. Even small dust particles can interfere with the adhesion of the metal and generate defects in the final finish.
