Era of Empire Crystal Mine Details
Era of Empire Crystal Mine produces and stores crystals required to build and upgrade Buildings. Increase your crystal income and storage amount by upgrading the Crystal Mines. You can have a maximum of ten (10) Crystal Mines and it is suggested you keep them the same level as your Castle. The capacity indicates the maximum amount of crystal the Crystal Mine can store. When the crystal produced reaches the capacity, the Crystal Mine will not produce any more crystal until you gather the crystal being stored.
See the table below for building requirements and various statistics regarding Era of Empire Crystal Mine: