Overview
Blackstone Slab is one of the 30 variants of this shape in the game. What changes between them is the material, and with it the hardness, the drops, the durability and the recipe — so every figure on this page is this variant's own. Oak Slab is the same shape in a different material.
Blackstone Slab is a Nether block in Minecraft Java Edition 1.21.4. Blackstone Slab has a crafting recipe, so it is renewable as long as you can source its ingredients. At a hardness of 2 it takes a moment to break but never slows a build down.
It needs at least a wooden pickaxe to drop anything; a weaker tool destroys it for nothing. Mining it returns the block itself, so it is safe to relocate. A full stack holds 64.
It is crafted from Blackstone. The stonecutter is the cheaper route: one Blackstone gives one of these. No recipe takes it as an ingredient.
About the blackstone set
How long it takes to break
Blackstone Slab sits at hardness 2: 10 seconds per block with your fists, 0.35 with the correct netherite tool.
You are looking at 0.5 seconds on iron and 0.4 on diamond — the iron step is where the time actually falls.
A weaker tool still breaks it, but anything under wooden returns nothing — you spend the time and lose the drop, which is how most veins get wasted.
Each Efficiency level adds level² + 1 to the tool's speed, so a level V tool clears this about 3.5 times faster than an unenchanted one.
| Tool | No enchantment | Efficiency III | Efficiency V |
|---|---|---|---|
| Hand * | 10 s | 10 s | 10 s |
| Wooden | 1.5 s | 0.25 s | 0.15 s |
| Stone | 0.75 s | 0.25 s | 0.1 s |
| Iron | 0.5 s | 0.2 s | 0.1 s |
| Diamond | 0.4 s | 0.2 s | 0.1 s |
| Netherite | 0.35 s | 0.2 s | 0.1 s |
| Golden | 0.25 s | 0.15 s | 0.1 s |
Properties
Blackstone Slab resists blasts at 6, which usually is not enough when something explodes nearby. Light does not pass through it, and it emits none of its own. A single slot takes 64, the usual full stack. The fastest tool for it is a pickaxe; any other kind of tool mines it no faster than a bare hand does, because the speed bonus only applies to the tool class the block is tagged for. As furnace fuel it burns for 7.5 seconds — 0.8 smelting operations.
- Transparent
- No
- Required tool
- Wooden Pickaxe
- Fuel value
- 7.5 s
How to get it
Crafting Table
Blackstone Slab ×6
Stonecutter
Blackstone Slab ×2
Drops
Mined with Wooden Pickaxe, Blackstone Slab drops itself.
Guides and tools that cover this
Frequently asked questions
How do you get Blackstone Slab in Minecraft?
Blackstone Slab is crafted from Blackstone.
What tool do you need to break Blackstone Slab?
Wooden Pickaxe or better is required; anything weaker destroys the block without dropping it.
Is Blackstone Slab blast resistant?
Blackstone Slab has a blast resistance of 6, so an explosion nearby will destroy it.
How many Blackstone Slab fit in one stack?
Blackstone Slab stacks to 64, so a single double chest holds 3,456 of them.
How long does Blackstone Slab take to break?
0.35 seconds with a netherite-tier tool of the right class, or 10 seconds bare-handed.
The rest of the set
Blackstone Slab is one of 30 variants of the same shape. The others are made from different materials, so their numbers differ:
