The crystals have been being created by the island's thunderstorms ever since the Great Cataclysm.
Crystal Raptors have been collecting them ever since the Raptors saw how pretty they were.
Source of Power Edit
The crystals are a kind of glass that is made when lightning strikes the slightly metallic sand of Crystal Island. The sand fuses to glass, while the metallic particles are electromagnetized and drawn to each other slightly before the fusion is complete. The metallic particles hold the charge while the glass particles around the exterior insulate the charge from leaving.
This creates a kind of high-voltage battery that discharges slowly once cracked open and touched.
To get full capacity, the crystal must be ground into powder to release maximum charge at once.
- Sidd has had to let his full nerd free to explain this one.