Diamond hands is a slang term used in crypto communities to describe investors who hold onto their assets through extreme volatility without selling. It conveys confidence and resilience, though in practice it can either lead to massive profits or significant losses depending on market outcomes.
Example:
An investor who bought Bitcoin at $20,000 in 2017 and refused to sell through the 2018 crash, holding until it reached $120,000, would be described as having diamond hands.