Glass — Minecraft block

Glass

Glass is a transparent block smelted from sand, used for windows, greenhouses, and modern builds.

Block ID minecraft:glass
Mod Vanilla
Game versions
1.21

Description

Glass is the simplest transparent block in Minecraft, produced by smelting one sand block in a furnace, blast furnace, or smoker. Both regular and red sand work as inputs and yield the same colourless output. The block lets light pass through without obstruction, which is why it is the standard material for windows, mob-proof skylights, and underwater observation rooms — water on one side stays liquid, air on the other stays breathable.

Glass is brittle. Mining it without the Silk Touch enchantment destroys the block entirely, so a Survival player who plans to relocate windows needs a Silk Touch pickaxe ready. Glass does not conduct redstone, never catches fire, and supports no mob spawning, which makes it useful for safe rooms and farm sealing. Six blocks arranged in two horizontal rows produce sixteen glass panes — the slimmer profile favoured by builders for greenhouse walls and decorative leaded windows.

Java & Bedrock Guide

How to make and use Glass in Minecraft

  1. 1

    Gather sand

    Dig sand or red sand from beaches, deserts, or riverbeds with any shovel. One sand block becomes one glass block, so collect a full stack for large windows.

  2. 2

    Smelt the sand

    Place sand in the top slot of a furnace, blast furnace, or smoker with any fuel. Each sand smelts into one colourless glass block.

  3. 3

    Mine glass with Silk Touch

    To move a placed glass block, use a pickaxe enchanted with Silk Touch. Without Silk Touch the glass shatters and drops nothing.

  4. 4

    Craft panes or stained glass

    Arrange six glass in two horizontal rows for sixteen glass panes, or surround one dye with eight glass to make eight stained glass blocks.

Important

Glass is non-flammable and blocks mob spawning, but it has a low blast resistance of 0.3 and is easily destroyed by creeper or TNT explosions.

How to craft this block

Ingredients: Sand Sand x1
Crafting
Furnace
Sand
Fuel — coal or any other fuel
Glass
1
Glass XP: +0.1 · 10 sec

Used in crafts

Related blocks

Frequently asked questions

How do you make glass in Minecraft?

Smelt one sand block (regular or red sand) in a furnace, blast furnace, or smoker. Each sand yields one colourless glass block.

How do you get glass back after placing it?

Mine the placed glass with a Silk Touch pickaxe. Any other tool breaks the glass and drops nothing.

How do you craft glass panes?

Place six glass blocks in two horizontal rows on the crafting grid to make sixteen glass panes.

Does glass stop mobs from spawning?

Yes. Mobs cannot spawn on transparent glass, so it is useful for sealing farms and lighting safe rooms.

Is glass blast resistant?

No. Glass has a blast resistance of only 0.3 and is destroyed by creeper and TNT explosions.

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