Chaos Emerald of Life

The Chaos Emerald of Life is one of the four magical Chaos Emeralds sought after by Dr. Robotnik in the Quest for the Chaos Emeralds Saga of the Adventures of Sonic the Hedgehog cartoon series.

History
The most powerful of the four, this Emerald can give life to anyone and anything, even if they're already dead. This was hidden in a volcano in prehistoric Mobius. The Emerald is also guarded byMagma the Volcano God who would only yield the Emerald after a sacrifice was offered.

Robotnik's Sacrifice
In order to obtain the Emerald, Dr. Robotnik sacrifices his goons, Scratch and Grounder. After receiving the Emerald, he used it to make new henchmen, Lava Monsters. Finding out the lava was actually volcanic, hot mud, Dr. Robonik got Scratch and Grounder back.

Creating Life
Robotnik made a number a monsters with this Emerald, to fight off Sonic the Hedgehog.
 * Lava Monsters
 * Treasure Chest Crab
 * Metal Electricity Monster

Trivia

 * Scratch wanted to use this Emerald to become a real chicken, and Grounder wanted to use the emerald to be a real animal. (Most likely a mole)
 * The Chaos Emerald of Life is similar in shape to the Master Emerald shards from the Sonic Adventure series.