From Sonic Retro
To find them, one must enter any Sonic & Knuckles zone with all seven Chaos Emeralds, and jump into a flashing Giant Ring. These transport the character to the Hidden Palace, where the power of the Chaos Emeralds is transferred into large, grey emeralds. He can then jump onto one of the dull grey Super Emeralds and be whisked away yet again into a special stage. The Special Stages are identical to those in Sonic & Knuckles.
In Mushroom Hill Zone, there is one Giant Ring accessible to each character that always leads to a Super Emerald, no matter how many Chaos Emeralds have been collected. Collecting all 7 Super Emeralds unlocks Hyper Sonic, Hyper Knuckles, and Super Tails.
In Sonic Mania, the Super Emeralds make an appearance in their resting place in Hidden Palace, reached at the end of Lava Reef Zone Act 2 as Knuckles. Unfortunately, they have all turned grey and cracked, and are now completely drained of their power and thus can no longer be used.
The seven Super Emeralds, along with the Master Emerald, in the Emerald Shrine located in Hidden Palace Zone.
|Items in the Sonic the Hedgehog Game Series|
|Collectibles||Ring | Red Star Ring | Emblem | Chaos Drives | Material|
|Power-ups||Shield (Water, Lightning, Fire, Gold) | Invincibility | Power Sneakers | Power Core | Light Cores|
|Level Objects||Monitor | Spring | Spikes | Checkpoint | Time Warp Plate | Signpost | Goal Ring | Giant Ring | Capsule | Button | Bumper | Speed Booster | Chao Container|
|Powerful Items||Chaos Emeralds | Super Emeralds | Master Emerald | Time Stones | Chaos Rings | Precioustone | Sol Emeralds | Jeweled Scepter | World Rings | Excalibur | Phantom Ruby|
|Weapons||Piko Piko Hammer | Chaos Energy Cannon | Caliburn | Wispon|
|Devices||Remote Robot | Combi Confiner | Mother Computer | Nega's Camera | Arks of the Cosmos | Miles Electric|
|Other||Chili Dog | Scepter of Darkness | Cacophonic Conch|