rutilance
/ˈruːtɪləns/ /ˈruːt(ə)l(ə)ns/ /ˈruːtɪl(ə)ns/noun
Rutilant quality; the quality of glowing, shining, gleaming, glittering, with either a reddish or golden light.
Origin
Early 20th century. From rutilant: see -ance. Compare post-classical Latin rutilantia ruddy glow.