Mana Crystal

A Mana Crystal is a consumable item that increases maximum mana by 20 permanently, up to a maximum of 200 total. It takes 10 Mana Crystals to reach this maximum. It also restores 20 mana when used, but only as long the character's maximum mana is below 200. Mana Crystals are created by combining 3 or 5  Fallen Stars.

Trivia

 * Mana Crystals can be considered the mana counterpart to Life Crystals.

History
Cristal de mana 魔力水晶