Magic Gem

Magic Gems are objects that appears in the Sonic the Comic series published by Fleetway Editions. They are gems with magical properties found in Shanazar

Description
There are two separate stones that are referred to as Magic Gems. The first is a golden necklace containing several smaller gems in it that is worn around the user, and when doing so, will transform the user into a frog. The second is a cyan jewel that resembles a Chaos Emerald, and it grants the user immunity from Robotnik's Dimension Blender.

History
As Grand Vizier, Robotnik provided the necklace Magic Gem from Princess Kupacious, who instantly organised a royal walkabout to show it off. However, once she learned that Robotnik planned to crash Shanazar into Mobius and rule the combined world, Kupacious ordered her Imperial Guards to execute him. This command activated the magic gems, turning her into a frog.

When Robotnik activated the Dimension Blender, he originally planned to use the diamond Magic Gem to remain immune to the device's effects in order to rule the combined worlds. Unfortunately for him, the Magic Gem was stolen by Princess Kupacious, causing Robotnik's plans to fall apart.