Orange Gem Stone chest

In-game description
Use: Obtains certain amount of gem stones. Note: The chest will be returned to system at the end of the month, please use it in time!

Additional information
This chest is the rarest of all currently obtainable crystal chests. It also contains the highest amount of crystals (on average). Like all crystal chests, it is best to use it once claimed, otherwise it expires after the month is over.

Content
Once opened, the player receives a random amount of crystals, which can be one of 20, 50, 68 or 80.

Methods to obtain
The Orange Gem Stone Chest is awarded if a player successfully completes stage 5 of any chapter at the highest (purple) difficulty in story mode.