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Scagliola
Type of fine plaster / From Wikipedia, the free encyclopedia
Scagliola (from the Italian scaglia, meaning "chips") is a type of fine plaster used in architecture and sculpture. The same term identifies the technique for producing columns, sculptures, and other architectural elements that resemble inlays in marble.[1] The scagliola technique came into fashion in 17th-century[2] Tuscany as an effective substitute for costly marble inlays, the pietra dura works created for the Medici family in Florence. The use of scagliola declined in the 20th century.[3]
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Scagliola is a composite substance made from plaster of Paris, glue and natural pigments, imitating marble and other hard stones. The material may be veined with colors and applied to a core, or desired pattern may be carved into a previously prepared scagliola matrix. The pattern's indentations are then filled with the colored, plaster-like scagliola composite, and then polished with flax oil for brightness, and wax for protection. The combination of materials and technique provides a complex texture, and richness of color not available in natural veined marbles.
A comparable material is terrazzo. Marmorino is a synonym, but scagliola and terrazzo should not be confused with plaster of Paris, which is one ingredient.