In The Queen of the Air, John Ruskin mentions the landscape painter J. M. W. Turner several times, and once refers to a specific work of his. Perhaps it is this painting.

Here is the passage: “But, opposite me, is an early Turner drawing of the lake of Geneva, taken about two miles from Geneva, on the Lausanne road, with Mont Blanc in the distance. The old city is seen lying beyond the waveless waters, veiled with a sweet misty veil of Athena’s weaving; a faint light of morning, peaceful exceedingly, and almost colorless, shed from behind the Voirons, increases into soft amber along the slope of the Saleve, and is just seen, and no more, on the fair warm fields of its summit, between the folds of a white cloud that rests upon the grass, but rises, high and tower-like, into the zenith of dawn above.”

I looked at some other works that Ruskin could potentially be referring to, including this one: