The Diamonds are a Canadian vocal quartet that emerged in the 1950s, noted for their doo-wop and close harmony style. They gained prominence with their cover versions of rhythm and blues hits, including their most successful single, "Little Darlin'." Although none of the original members remain, the band has continued to perform with a rotating lineup. The Diamonds made significant contributions to the popularization of rock and roll music, bridging the gap between rhythm and blues and mainstream pop.