The phrase comes from Diamonds, the pop single released by Barbadian singer Rihanna in 2012 and written by Sia with its production team. Its chorus built the song around shining bright like a diamond, and the sky line became one of its most quoted hooks. The track was a major international hit and stayed in rotation through radio, talent shows and cover versions. Online, the short sky phrase was clipped on its own because it is instantly recognisable, works without the full song, and fits short glamorous edits.