How to Make Polished Blackstone Slab in Minecraft
Polished Blackstone Slab
Polished Blackstone Slab is a half-height slab (fills the bottom or top half of a block space) made from polished blackstone for smooth dark floors.
Description
Polished Blackstone Slab serves builders who need dark floors, stair runs, and accent stripes at half-block height, and two slabs stacked in one block space merge into one full block. Polished Blackstone Slab is a renewable resource (players can farm it endlessly through piglin bartering); no light comes from the slab, fire does not spread to the slab, and lava does not ignite the slab.
Block properties
| Item ID |
minecraft:polished_blackstone_slab
|
|---|---|
| /give command |
/give @p minecraft:polished_blackstone_slab
|
| Stackable | Yes (64) |
| Best tool | Pickaxe |
| Renewable | Yes |
| Hardness | 2 |
| Blast resistance | 6 |
| Java Edition | 1.16 |
| Bedrock Edition | 1.16.0 |
Guide
How to get Polished Blackstone Slabs in Minecraft
-
1
Mine slabs at a Nether ruined portal
Polished blackstone slabs generate as parts of ruined portals in the Nether; break a slab with any pickaxe to collect it.
-
2
Craft six slabs from three blocks
Place three polished blackstone blocks in one row of the crafting grid to craft six polished blackstone slabs.
-
3
Cut blocks on a stonecutter
One blackstone or one polished blackstone block becomes two polished blackstone slabs on a stonecutter — the same two slabs per block as crafting.
-
4
Merge two slabs into one full block
Place one polished blackstone slab on top of another in the same block space; the pair merges into one full block.
A polished blackstone slab broken without a pickaxe drops nothing — even a wooden pickaxe, the minimum tool tier, saves the loot.
How to craft this block
Polished Blackstone
x3
Used in crafts
Frequently asked questions
Is Polished Blackstone Slab renewable?
Yes. Since Java Edition 1.16.2, piglins barter 8–16 blackstone with an 8.71% chance, and one bartered blackstone cuts into two polished blackstone slabs on a stonecutter.
Can Polished Blackstone Slab hold water?
Yes. A water source can occupy the same block space as the slab, so dark floors stay compatible with water features.
Which version added Polished Blackstone Slab?
Java Edition 1.16 and Bedrock Edition 1.16.0 added Polished Blackstone Slab; ruined-portal generation arrived in the same 1.16 Nether updates.
How strong is Polished Blackstone Slab?
Polished Blackstone Slab has hardness 2 and blast resistance 6.
How many polished blackstone slabs fit in one stack?
One inventory slot holds up to 64 polished blackstone slabs.