effulgence - the quality of being bright and sending out rays of light
radiancy, refulgence, refulgency, shine, radiance
brightness - the location of a visual perception along a continuum from black to white
gleam, lambency, gleaming, glow - an appearance of reflected light
sheen, shininess, luster, lustre - the visual property of something that shines with reflected light
burnish, glossiness, polish, gloss - the property of being smooth and shiny