Chaos Emeralds

The seven Chaos Emeralds from the Sonic the Hedgehog franchise.

The origins of these mythical crystals are unknown, but many have speculated that they were forged by the gods of old. Individually, each emerald can power machinery, or unlock special abilities. However, if one manages to collect all seven emeralds, the user will obtain the ultimate power and enter a Super state, rendering them invincible for a limited time.