A halo (from Greek , "halōs"; also known as a nimbus, aureole, glory, or gloriole) is a ring of light that surrounds a person in art.

The depiction of the flames may be very formalized, as in the regular little flames on the ring aureole surrounding many Chola bronzes and other classic Hindu sculptures of divinities, or very prominent, as with the more realistic flames, and sometimes smoke, shown rising to a peak behind many Tibetan Buddhist depictions of the "wrathful aspect" of divinities, and also in Persian miniatures of the classic period.

The whole-body image of radiance is sometimes called the 'aureole' or "glory"; it is shown radiating from all round the body, most often of Christ or Mary, occasionally of saints (especially those reported to have been seen surrounded by one).

"Aureole", from the Latin for "golden", has been used in English as a term for a gold crown, especially that traditionally considered the reward of martyrs, since the Middle Ages (OED 1220).

Fenite alteration is known, but very restricted in distribution, around high-temperature metamorphic talc-carbonates, generally in he form of a sort of aureole around ultramafics.