Divinity Stone

Divinity Stones are extremely rare stones and are considered to be one of the greatest historical treasures of its world.

Description
Divinity Stones are crystals that emit a pale blue light. They are formed when large clumps of Mana pool together and crystallize over the course of a thousand years. Then, after a few hundred years, the saturated Mana is liquefied and secreted as a potent healing elixir called "Ambrosia".

Although most Divinity Stones are formed naturally, they can also be artificially created by a person or persons that possess an extremely large quantity of Mana, ad pool it over a extended period of time, though not nearly as long as the normal amount of time it takes for them to form.

Trivia

 * Divinity Stones can reach up to 30 to 40 cm in diameter.
 * Divinity Stones are the only known material that can be used for Artifacts enchanted with Concept Magic.