Organic dyes extracted from plants, insects, and shellfish have been used for millennia in dyeing textiles and manufacturing colorants for painting. The economic push for dyes with high tinting strength, directly related to high extinction coefficients in the visible range, historically led to the selection of substances that could be used at low concentrations. But a desirable property for the...

The grave from Gokstad in Norway, dating to ca 900 AD, is one of the best-preserved Viking Age ship graves world. mound contained a variety goods along with human remains, buried ship. Several textiles, including embroideries and shreds what might have been ship’s tent, were also found. colors textile fragments are now severely faded, but high quality embroidery made gold silk threads still app...

Abstract The present contribution deals with the use of organic colourants in wall paintings, polychrome pottery and painted stone artworks, i.e. artworks on inorganic supports. term is referred to chemical nature these compounds but not way application; therefore, can be dyes, lakes or pigments. paintings has been given little attention past, perhaps assumption that they were rarely used by an...