adjective
1.
having a high gloss or shine
a lustrous star sapphire
Synonyms: burnished, gleaming, glistening, glossy, polished, sheeny, shining, shiny
Related Word: gleamy, glimmering, glinting, sparkling; radiant
Contrasted words: dull, flat, lackluster, mat
Antonyms: lusterless
2.
Synonyms: bright 1, brilliant, effulgent, fulgent, incandescent, lambent, lucent, luminous, radiant, refulgent
Related Word: glorious, resplendent, splendid