What ARE the Chaos Emeralds in the Sonic Universe?

Chaos Emeralds, Sonic Nexus Wiki

Chaos emeralds headcanon by Mint-Lazuli on DeviantArt

how powerful are the chaos emeralds by themselves? : r/PowerScaling

Sonic the Hedgehog / 7 Chaos Emeralds and 5 Power Rings IN A

Sonic Chaos Emeralds Gems - Set of 7 - in a Bag

Who are more powerful, Chaos emeralds (Sonic) or pure hearts

Sonic the Hedgehog - Chaos Emeralds [1:1 Scale - Set of 7]

Drawing classic Super Sonic and the 7 Chaos Emeralds. #sonicthehedgeho

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After harnessing the 7 Chaos Emeralds and the power of the Mother Wisp, Sonic becomes Hyper Go-On Sonic. Hyper Sonic has the all abilities of Super Sonic tenfold, while also having all