Minecraft wiki entry for The_Nether, associated text: Air
Basalt
Polished Basalt
Blackstone
Blackstone Slab
Blackstone Stairs
Blackstone Wall
Gilded Blackstone
Polished Blackstone
Polished Blackstone Slab
Polished Blackstone Stairs
Polished Blackstone Bricks
Polished Blackstone Brick Slab
Polished Blackstone Brick Stairs
Polished Blackstone Brick Wall
Cracked Polished Blackstone Bricks
Chiseled Polished Blackstone
Bone Block
Block of Gold
Chain
Chest
Crying Obsidian
Glowstone
Lantern
Lava
Magma Block
Nether Bricks
Nether Brick Fence
Nether Brick Stairs
Nether Wart
Netherrack
Obsidian
Quartz Block
Smooth Quartz Block
Smooth Quartz Slab
Soul Sand
Spawner