The Warded Chest is a chest that no one other than the player who placed it can open or destroy it. The player who placed it can only remove it by right clicking it with a wand. If the Warded Chest still has items in it when removed, it will, like other chests spill all items onto the ground around it.
The Portable Hole is NOT able to tunnel through this block.
The Arcane Bore will NOT break this block.
Golems cannot place blocks into these chests.
"After creating, and working with Warded Blocks, you have discovered a way of making them into storage. This chest is completely safe and can only be opened by the person who placed it. It also has an extended storage space.
Similar to Warded Blocks, this chest can only be removed with a wand. On a negative note, the chest lacks a keyhole."