Emerald Shards (Sonic X)

Emerald Shards are objects that that appeared in the Sonic X anime and it's comic book spin-offs. They are the fragments of the Master Emerald created after the latter get crashed by an external force or after using up much of the Master Emerald's power.

Description
Emerald Shards are pieces of the Master Emerald that posses no special abilities on their own. In most cases, if the Master Emerald is destroyed, its fragments will be transported to different locations while some parts (in particular) the base ones remain. Should the fragments be gathered in one place or after regaining power, they form the Master Emerald again. In addition, their sizes are not the same, and they vary from small to bigger sizes.

Chaos Saga
After the large Chaos Control that brought the Angel Island to Earth, the Master Emerald was transported to the Earth too. However, the Master Emerald was shattered by Dr. Eggman to release Chaos, causing the Emerald Shards to scatter far and wide and causing Angel Island to fall into the sea. As such, Knuckles began searching for the fragments across various areas. Whenever Knuckles found a fragment, it would show him a vision of Tikal and Chaos' past. After Knuckles had brought most of its pieces together, the partially restored Master Emerald showed Knuckles that the remaining fragments were on the Egg Carrier. Not long after, Knuckles brought the final pieces back and fully restored the Master Emerald.

Metarex Saga
During the battle with Final Mova, the Master Emerald was shattered from being pushed too far when it was used to fire the Sonic Power Cannon at Final Mova. This time however, the shards stayed in the same place. Knuckles later brought the powerless Emerald Shards back to Angel Island where they could recover naturally.