What does "diamonds in the sky" mean? Is it an idiom?
I can see why you would think that! However, the phrase "diamonds in the sky" references a song by Rhianna called "Diamonds". Here it is used as a pop culture reference in the movie clip. Many movies, songs, series, and books reference popular culture. Ex: Just sing along to Elton John. => A lyric from BTS's new song "Permission To Dance" referencing the singer "Elton John". Ex: Woah, Papa. That was epic! Whoever saved you, I love them. => Use of the word "epic" in Frozen 2.
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