Artists create rich, glowing colors with transparent glazes
It is The art of producing decorative handwriting or lettering with a pen or brush, it was used on many occasions to write important letters and sayings.
'Illuminated manuscripts were created using delicate, natural materials, such as gold leaf, silverpoint, vellum, and bright, mineral-derived paints. Each manuscript was carefully illustrated, gilded, and written by hand, requiring a high degree of craftsmanship' - Google Answer:
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