This is a chunk of coal that has had a tremendous amount of pressure applied to it. Now all you need is a few hundred years, and you'll have a great big diamond!
Sell Value: 200 
Acquired From
- Crushing a boulder of coal in the Coal Crusher 5000 located outside of Deepest Delve Mine
Uses[ | ]
- When put through the left hole of the Timesqueezer it yields a massive diamond.
- When taken to the Jeweler's Cabin, it can be crafted into a coal ring.