The Crystal Chest is a chest added by the Iron Chests mod. It has 108 slots, the same as a Diamond Chest, but the items inside it are visible without opening the chest. It is only available as a single chest, but this has the added bonus of being able to place chests directly next to each other. The item sprites increase with the number of items up to a capacity of 3 stacks. If you are having FPS issues, consider using the Obsidian Chest, as it does not reduce FPS but has the same storage.
This might possibly lag servers.
