A gold album is a musical album that has sold 500,000 copies or more. There are several synonyms for gold albums, including platinum album (1 million copies sold), diamond album (10 million copies sold), multi-platinum album (2 million or more copies sold), and certified album (a term used in the U.S. recording industry to denote the number of units sold). These terms are used to signify the commercial success of a musical album. A gold album is considered an achievement for any artist or band, as it demonstrates that their music has resonated with a large audience. The different levels of certification are a way for fans, industry professionals, and music critics to recognize the success of an artist's work.