Strictly defined, the phrase “illuminated manuscript” refers only to texts decorated with gold or silver. Now, however, the term is commonly used to describe any decorated or illustrated manuscript from the Western or Islamic traditions. The majority of surviving manuscripts date back to the Middle Ages, during which period they were often produced in monasteries. Illumination was a complex and costly process. What insects were used to make the red pigments that decorate these manuscripts? Discuss
Source: The Free Dictionary