The Diamond Lock is a Lock that was added on August 22nd, 2014. It is has the same value as 100 World Locks and was added to allow players to trade items worth more than 200 World Locks in a single trade.
- When compressing: "You Compressed 100 World Locks into a Diamond Lock!". You can compress World Locks by double-clicking them in your inventory!
- When shattering: You Shattered a Diamond Lock into 100 World Locks!". You can shatter a Diamond Lock by double-clicking it.
- Recycling a Diamond Lock gives 20,000 Gems.
- It is used to make the Robotic Lock.
- A Blue Gem Lock can be purchased from Sales-Man for 100 Diamond Locks, which can then be compressed back into 100 Diamond Locks when the player double taps on it in their inventory.