Minecraft Wiki
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This feature used to be in the game, but has ever since been removed.It may or may not return in a future update.
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This feature is exclusive to Java Edition. 

The list of Blocks and Items in Minecraft Classic and Indev.

These values apply to blocks placed in the world in Minecraft Classic. Since versions since Minecraft Classic have drastically increased the number of blocks, and removed or re-used IDs, Minecraft Classic has its own list. IDs in
 light blue
cannot be legitimately obtained in the player's inventory in the game; they can only be obtained by inventory editors.


Icon Dec Hex Block
0 0 Air
Stone JE2 BE1 1 1 Stone
Grass Block JE2 2 2 Grass Block
Dirt JE1 3 3 Dirt
Cobblestone JE2 BE1 4 4 Cobblestone
Oak Planks JE3 BE1 5 5 Planks
Oak Sapling JE2 6 6 Sapling
Bedrock JE1 BE1 7 7 Bedrock
Water JE5 8 8 Flowing Water
Water JE5 9 9 Stationary Water
Lava JE6 10 A Flowing Lava
Lava JE6 11 B Stationary Lava
Sand JE2 12 C Sand
Gravel JE2 13 D Gravel
Gold Ore JE2 BE1 14 E Gold Ore
Iron Ore JE1 BE1 15 F Iron Ore
Coal Ore JE1 BE1 16 10 Coal Ore
Icon Dec Hex Block
Oak Log Axis Y JE1 17 11 Wood
Oak Leaves JE2 18 12 Leaves
Sponge JE1 BE1 19 13 Sponge
Glass JE3 BE1 20 14 Glass
Red Cloth 21 15 Red Cloth
Orange Cloth 22 16 Orange Cloth
Yellow Cloth 23 17 Yellow Cloth
Chartreuse Cloth 24 18 Chartreuse Cloth
Green Cloth 25 19 Green Cloth
Spring Green Cloth 26 1A Spring Green Cloth
Cyan Cloth 27 1B Cyan Cloth
Capri Cloth 28 1C Capri Cloth
Ultramarine Cloth 29 1D Ultramarine Cloth
Violet Cloth 30 1E Violet Cloth
Purple Cloth 31 1F Purple Cloth
Magenta Cloth 32 20 Magenta Cloth
Rose Cloth 33 21 Rose Cloth
Icon Dec Hex Block
Dark Gray Cloth 34 22 Dark Gray Cloth
Light Gray Cloth 35 23 Light Gray Cloth
White Cloth 36 24 White Cloth
Dandelion JE1 37 25 Flower
Rose JE1 38 26 Rose
Brown Mushroom JE1 39 27 Brown Mushroom
Red Mushroom JE1 40 28 Red Mushroom
Block of Gold JE2 41 29 Block of Gold
Block of Iron JE1 BE1 42 2A Block of Iron
Double Smooth Stone Slab JE1 BE1 43 2B Double Slab
Smooth Stone Slab (centered) JE1 BE1 44 2C Slab
Bricks JE1 45 2D Bricks
Bookshelf JE1 47 2F Bookshelf
Mossy Cobblestone JE1 48 30 Mossy Cobblestone
Obsidian JE1 BE1 49 31 Obsidian