This one is a collection of gemstones encountered throughout the Sonic the Hedgehog franchise (didn't end up like it should though).
Left Column: Time Stones (Sonic CD)
Right Column: Sol Emeralds (Sonic Rush)
Bottom Row: Chaos Emeralds
Centre: Phantom Ruby (Sonic Mania)
All gemstones pictured here belong to SEGA. As fanart, no copyright infringement is intended.
You are free to copy, distribute and transmit this work under the following conditions: