Final answer:
Raphael's remarkable works were characterized by his pioneering use of glazing and underpainting, which added depth and luminosity to his paintings.
Step-by-step explanation:
Raphael's works were remarkable for various reasons. One notable achievement was his pioneering use of glazing and underpainting. Glazing involves applying transparent layers of paint over a dried layer of paint, creating luminosity and depth in the artwork. Underpainting, on the other hand, is the initial layer of paint applied to establish the composition and values of the artwork. By experimenting with these techniques, Raphael was able to create unparalleled realism and visual richness in his paintings.
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