No, a personification is when you give an inanimate object human qualities.
The sky roared with anger!
metaphor
The dark sky was angry and resentful.
Yes, "under the jewelled sky" is an example of personification because the sky, an inanimate object, is described as having the qualities of a jewel, which is typically associated with beauty and value. This personification adds an element of vivid imagery and enhances the poetic quality of the description.
Alright so there is "the clouds are mean" obviously the clouds cannot really be mean they just look mean. There is also "a narrow wind complains all day" the wind is really just whistling like wind does, but the poet describes it as complaining to help set the mood of the poem.
Uranus (Ouranos meaning "sky" or "heaven") was the personification and god of the heavens/sky.
personification
In the darkness the moon smiled in the sacred sky
Caelus, the personification of the sky.
Very well-written example of personification.
In Greek mythology, Uranus is associated with the sky, and thus is said to live in the heavens or the celestial realm. He is considered the personification of the sky itself and is often depicted as the dome of the sky that covers the Earth.
Sky Low Low is 3' 6".