The Sonic Universe is full of gems: Chaos Emeralds, Sol Emeralds, Chaos Rings etc etc. Which ones should be canon and which shouldn't.
Chaos Emeralds
The main and most well-known gem from the series.
For
- Legion
- Apallo
- Boom
- Flame
- Rio
Against
Sol Emeralds
The firey counterpart to the energy-centric Emeralds.
For
- Legion
- Apallo
- Boom
- Flame
- Rio
Against
Chaos Rings
Strange rings enfused with Chaos energy.
For
- Legion
- Apallo
- Boom
- Flame
- Rio
Against
Master Emerald/Grey Emerald
A special Emerald capable of controlling the other 7.
For
- Legion
- Apallo
- Boom
- Flame
- Rio
Against
Anarchy Beryl
(for those who don't know they're basically the anti-dimensional versions of the Chaos Emeralds from the Archie canon)
For
- Legion
- Apallo
- Boom
- Flame
- Rio
Against
Chaos Emeralds (AoStH)
Four gems that hold different purposes.
For
- Legion
- Apallo
- Boom
- Flame
- Rio
Against
Time Stones
Seven gemstones that reside on Little Planet. They're capable of giving the wielder varying control over Little Planet's time period as well as stabilizing the planet.
For
- Legion
- Apallo
- Boom
- Flame
- Rio
===Against===