A group of seven gemstones from the [[Sonic (series)|Sonic the Hedgehog]] franchise. As they can serve as a source of tremendous power, they are usually sought after by the villains for use in their evil schemes.

When all seven are collected, they allow certain characters to transform into a more powerful form known as a "Super State". For example, [[Sonic the Hedgehog]] becoming [[Super Sonic]].

While their exact colors may vary between different media, the most common setup is one emerald each in the colors blue, yellow, red, green, purple, turquoise/aqua, and white/gray.
カオスエメラルド