How to get it
Crafting
Crafting table✓ Emma made it in-game
Stonecutter and smithing
Breaking blocks
| Block | How | Drops | Chance |
|---|---|---|---|
| Blackstone Slab | needs a pickaxe | 2 | 100% |
From scratch
The cheapest way to make one, worked out from every recipe the way Emma's planner breaks a goal down.
Gather
Blackstone×3break Blackstone (any pickaxe)