- Jul 24
- 1 min read

Have you ever picked up a rock and wondered why it's red, green, or even purple? The colors in rocks come from the minerals inside them.
Just like mixing paint, different minerals add different colors. For example, iron often makes rocks red, orange, or yellow—just like rust on old metal. Copper can turn rocks green or blue. Black rocks may have a lot of carbon or magnetite, while white ones might be full of quartz. Some rocks even change color over time because of water, air, or heat. That’s why you might see a shiny gray rock turn brown if it sits outside too long.
Every color tells a story about where the rock came from and what it’s been through. Next time you're out walking, take a closer look—you might be holding a piece of Earth’s art in your hand.
Want more rock stories? Stay tuned!