The Moon Chest is a limited edition Chance Chest that was released on July 25th, 2014 and ended on July 28th, 2014. The new Epic released in this chest is the Ravage Shieldplate which is an Epic Fire/Earth.
1 Chest: 40 Gems
11 Chests: 400 Gems
40 Chests: 1,200 Gems
11 Chests: 5 Earth Fusion Boost Armors