What is diamond in the rough meaning?

The phrase "diamond in the rough" refers to a person, thing, or idea that has great potential or value, but is unrecognized, misunderstood, or undeveloped. It is often used to describe someone who has not yet fully realized their talent or potential, or who may have rough edges that need to be polished in order to shine. The term is derived from the practice of diamond mining, where rough diamonds are found in the earth and must be cut, polished, and refined in order to reveal their true beauty and value. In popular culture, the phrase is often used to describe underdog characters who rise to greatness through hard work, perseverance, and determination.