Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Luminous

Luminous as jelly.
—Ambrose Bierce

Luminous as a panther’s skin.
—Sir Arthur Conan Doyle

As luminous as the sun’s intensest beam.
—Charles Sangster

Luminous as a lit-up ballroom.
—H. de Vere Stacpoole