Cracked Polished Blackstone Bricks

Overview

Cracked Polished Blackstone Bricks counts as a Nether block in Minecraft 1.21.4. Hardness 1.5 puts it in the middle of the pack for mining speed. 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. Put Polished Blackstone Bricks in a furnace and this is what comes out.

It is not used in any crafting recipe.

How long it takes to break

Hardness 1.5 puts Cracked Polished Blackstone Bricks at 7.5 seconds a block bare-handed, or 0.25 seconds with the right tool at netherite tier.

You are looking at 0.4 seconds on iron and 0.3 on diamond — the diamond 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.

Efficiency adds its level squared plus one to the tool speed, so Efficiency V is about 2.5 times faster than the same tool unenchanted.

* breaks the block but yields no drop
Tool	No enchantment	Efficiency III	Efficiency V
Hand *	7.5 s	7.5 s	7.5 s
Wooden	1.2 s	0.2 s	0.1 s
Stone	0.6 s	0.2 s	0.1 s
Iron	0.4 s	0.15 s	0.1 s
Diamond	0.3 s	0.15 s	0.1 s
Netherite	0.25 s	0.15 s	0.1 s
Golden	0.2 s	0.15 s	0.1 s

Properties

With 6 blast resistance Cracked Polished Blackstone Bricks usually goes down to a nearby explosion. It is fully opaque and produces no light. A single slot takes 64, the usual 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.

Transparent: No
Required tool: Wooden Pickaxe