Polished Deepslate Slab — Minecraft block

Overview

Polished Deepslate Slab is a stone-family block in Minecraft Java Edition 1.21.4. Polished Deepslate Slab is made at a crafting table. Expect to wait: its hardness of 3.5 is well above average.

Mine it with a wooden pickaxe or better, or you get no drop at all. Broken correctly, it drops itself. Sixty-four fit in one inventory slot.

The recipe calls for Polished Deepslate. A stonecutter can cut it straight from Cobbled Deepslate, with nothing wasted. Nothing on the crafting grid is made from it.

How long it takes to break

At a hardness of 3.5, Polished Deepslate Slab takes 18 seconds to punch out and 0.6 seconds with a netherite-tier tool of the correct class.

Iron manages 0.9 seconds and diamond 0.7, which makes iron the tier that changes how this block feels.

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 4 times faster than an unenchanted one.

* breaks the block but yields no drop
Tool	No enchantment	Efficiency III	Efficiency V
Hand *	18 s	18 s	18 s
Wooden	2.7 s	0.45 s	0.2 s
Stone	1.4 s	0.4 s	0.2 s
Iron	0.9 s	0.35 s	0.2 s
Diamond	0.7 s	0.3 s	0.2 s
Netherite	0.6 s	0.3 s	0.15 s
Golden	0.45 s	0.25 s	0.15 s

Properties

With 6 blast resistance Polished Deepslate Slab usually goes down to a nearby explosion. It is fully opaque and produces no light. 64 fit in a slot — a full stack. A pickaxe is the fastest choice here. A tool of the wrong class is no better than your fist — the speed bonus is tied to the block's own tool tag. As furnace fuel it burns for 7.5 seconds — 0.8 smelting operations.

Transparent: No
Required tool: Wooden Pickaxe
Fuel value: 7.5 s