The eight known gems for
. Sonic the Hedgehog (2006)
Gems are small and rare crystals from  Soleanna that were introduced in , the only game they have appeared in so far. They are Sonic the Hedgehog (2006) Level Up Items that Sonic can use to alter the appearance of his shoes, giving him specific Custom Actions. Gems can be purchased from the shop, but are only available after certain levels are completed.
When beginning the game as Sonic, the first
Town Mission involves an old shoemaker named Alberto Robert. He has created the ultimate shoes, known as Custom Shoes, that use the power of Soleanna's mysterious stones to transform. He lets Sonic try out the Custom Shoes, and when the results of this test are successful, he is so proud of the shoes that he lets Sonic keep them.
List of Gems
The gems are "emerald cut", and thus look like the Sol Emeralds.
In the demo, it was hinted that an eighth gem, the Rainbow Gem, would have been included in the final game, but the idea was scrapped as the gem's function was never completed. However, it is believed that it would have caused Sonic to become Super Sonic.
 Due to the Action Gauge never being correctly implemented for Sonic's gems, the gauge never drains, and as a result the gem powers can be used indefinitely.
↑ Sonic Team, Blindlight (8 December 2006). Sonic the Hedgehog. PlayStation 3. Sega. Area/Level: Castle Town. "
Alberto Robert: The stones that you can fit into the shoes are called gems, and you can buy them at the shop over there. They're very rare, but if you put one in these Custom Shoes, they will give you an entire new ability." ↑
Color Blocks | Chaos Emeralds ( Extreme Gear) | Crystals | Emeralds | Emerald Shards | Forcejewels | Gems ( Blue, Green, Purple, Rainbow, Red, Sky, Yellow) | Great Emeralds | Master Emerald | Phantom Ruby | Precioustone | Sol Emeralds | Super Emeralds | Time Stones
Sonic the Comic Black Emerald | Grey Emerald | Chaos Emeralds | Master Emerald | Soul Crystal | Ultragem
Sonic the Hedgehog Deep Power Stone | Energy Crystal | Power Rock | Time Stones
Adventures of Sonic the Hedgehog Chaos Emeralds ( Immortality, Invincibility, Invisibility, Life, Ring)
Archie Comics Pre-SGW
Anarchy Beryls | Ancient Onyx | Chaos Emeralds ( Dark Mobius, In Another Time, In Another Place) | Freedom Emeralds | Guiding Star Gem | Master Emerald ( Dark Mobius) | Master Precioustone | Sol Emeralds | Super Emerald | Time Stone
Chaos Emeralds | Emerald Shards | Master Emerald | Sol Emeralds | Time Stones
Sonic Underground Chaos Emerald | Power Stone
Sonic X Chaos Emeralds | Master Emerald
Sonic Boom Chaos Crystals | Crystal Shards | Fregosi Sapphire | Lost Crystal of Power | Meroke Crystal | Tummel Crystal
Main article | Gallery | Beta elements | Staff | Script ( Sonic, Shadow, Silver, Last)
Sonic ( Super Sonic) | Tails | Knuckles | Shadow ( Super Shadow) | Rouge | Omega | Silver ( Super Silver) | Blaze | Amy
Accordion Player | Adrianna | Alan | Alessio | Alfano | Anna | Antonio | Aristo | Berruni | Bishop | Claudia | Dante | Dr. Eggman | Duchess of Soleanna | Duke of Soleanna | Elkan | Frances | Francesca | GUN Soldier | Galienna | Gina | Hatsun | Herman | Iblis | Ladies-in-waiting | Liza | Lord Regis | Mancini | Mephiles ( Mephiles's monstrous form) | Mikhail | Monica | Nicolo | Paganini | Parr | Pele | Pietro | Pinto | Porta | Priest | Princess Elise the Third | Prodi | Pucci | Puccini | Renzo | Alberto Robert | Roberta | Rossi | Sabrina | Sandro | Solaris | Soleanna Royal Guards | Solomon | Sonic Man | Sophia | Ken Williams | Zof
Dr. Eggman's Robots Egg Armor | Egg Bomber | Egg Buster | Egg Buster (Egg Gunner) | Egg Cannon | Egg Chaser | Egg Commander | Egg Flyer | Egg Guardian | Egg Gunner | Egg Hunter | Egg Keeper | Egg Lancer | Egg Liner | Egg Rounder | Egg Searcher | Egg Stinger | Egg Sweeper | Egg Walker
Iblis's Minions Gazer | Golem | Iblis Biter | Iblis Taker | Iblis Worm | Shadows | Stalker | Titan | Tricker
Action Stages Wave Ocean | Dusty Desert | White Acropolis | Crisis City | Flame Core | Radical Train | Tropical Jungle | Kingdom Valley | Aquatic Base | End of the World
Town Stages Castle Town | Forest | New City
DLC Stages Sonic Boss Attack | Shadow Boss Attack | Silver Boss Attack | Team Attack Amigo
Town Missions Sonic
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18
Egg-Cerberus | Egg-Genesis | Egg-Wyvern | Iblis | Mephiles | Shadow | Silver | Solaris | Sonic
Arrow of Light | Accelerator Tornado | Attack | Blast Jump | Bomb | Bomb Snipe | Bound Jump | Chaos Attack | Chaos Boost ( Chaos Blast, Chaos Lance, Chaos Snap) | Chaos Spear | Climb | Custom Action ( Gun Drive, Homing Smash, Mach Speed, Scale, Slow, Thunder Guard, Tornado) | Crouch | Double Jump | Dummy Ring Blitz | Dummy Ring Bomb | Dummy Ring Snipe | Edge Attack | Fire Claw | Fly | Glide | Grab All | Ground Shaker | Hammer Attack | Heart Mine | Hold Smash | Hover | Invisibility | Jump Dash | Levitate | Light Dash | Lock-On Shot | Omega Launcher | Omega Shot | Psychokinesis | Psycho Shock | Psycho Smash | Punch Attack | Screwdriver | Shield of Light | Sliding Attack | Spear of Light | Spin Dash | Spin Jump | Spin Kick | Spinning Claw | Teleport Dash | Turbo Boost | Wings of Light
Apple | Barrel | Chaos Drive | Container ( Blue crate, Explosive crate) | Goal Ring | Item Box ( Gauge Up, Super Ring, Shield, Invincibility, Extra Life) | Key | Light Core | Mechanical Ring | Medal | Pulley | Rainbow Ring | Ring | Silver Sphere | Spring | Star Post | Snowboard | Switch | Vine | Wide Spring
Level Up Items Air Chip | Antigravity | Bounce Bracelet | Gem ( Blue Gem, Green Gem, Purple Gem, Red Gem, Sky Gem, White Gem, Yellow Gem) | Heart of Wind | Light Chip | Memory Shard (black) | Memory Shard (blue) | Memory Shard (red) | Power Bracelet | Shock Bracelet | Single-Layered Extreme
/ Several Wills All Hail Shadow | Dreams of an Absolution | His World | My Destiny | Sweet Dreams AKON Mix
English voice actors
Jason Griffith ( | Sonic, Shadow the Hedgehog) Pete Capella ( | Silver the Hedgehog) Lacey Chabert ( | Princess Elise) Mike Pollock ( | Dr. Eggman, Narrator) Amy Palant | ( | Tails, Ladies-in-waiting) Lisa Ortiz ( | Amy, Ladies-in-waiting) Bella Hudson ( | Blaze) Dan Green ( | Knuckles, Mephiles, Solaris Project scientists) Kathleen Delaney ( | Rouge) Maddie Blaustein ( | Omega) David Wills (
Duke, G.U.N communitcator)
Japanese voice actors
Jun'ichi Kanemaru ( | Sonic) Kōji Yusa ( | Shadow) Daisuke Ono ( | Silver) Maaya Sakamoto ( | Princess Elise) Chikao Ōtsuka ( Dr. Eggman) Kenji Utsumi (Narrator, | Duke) Ryō Hirohashi ( | Tails) Hikari Yono ( | Ladies-in-waiting) Nao Takamori ( | Blaze) Nobutoshi Kanna ( | Knuckles) Takayuki Sakazume ( | Mephiles) Keiji Okuda (Solaris Project scientist, | G.U.N. communicator) Yoshikazu Kozuma (Solaris Project scientist) | Rumi Ochiai ( | Rouge) Taeko Kawata ( | Amy) Taiten Kusunoki (
Action Gauge | Auto Running | Bike | Buggy | Bungee Rope | Case | Chao in Space | Chaos Crush | Conveyor Belt | Custom Shoes | Cylinder | Day of Disaster | Dummy Ring | Eagle | Egg train | Eye of Solaris | Explosion Trap | Festival of the Sun | Glider | Hanging Bell | Havok | Health Gauge | Heart Bombs | Hint Ring | Horizontal Bar | Hover Craft | Laser Field Block | Lotus | Minecart | Mirror of Soleanna | Orb statue | Orca | PK mark | Purple Orb | Rainbow Gem | Rimlight | Scepter of Darkness | Shop | Soleanna | Solaris Project | Sphere | Spotlight | Super-Speed Stage | Tightrope | Turtle | Wall Jump | Warp Hole | Wind switch