"Diamonds" is a song by English singer Sam Smith, released through Capitol Records on 18 September 2020 as the second single from their third studio album, Love Goes (2020). The song was written by Smith with their producers Shellback and Oscar Görres. A remix of the song by English DJ Joel Corry and an acoustic version were released on 9 October 2020.
"Diamonds" is a breakup song that sees Smith "snarl[ing] like Gloria Gaynor in divorce court". Samantha Hissong of Rolling Stone called the song "three minutes and 34 seconds of catharsis.