Crying Obsidian

Crying Obsidian^[1] refers to a leaked, abandoned project by Jeb^[2] to implement a change-spawn obelisk.^[3] They appear as blue-detailed obsidian blocks that look as if they are crying/bleeding.

This texture was added in Beta 1.3, but was never used in the game. It closely resembles obsidian. It also appears to be a sandstone or a bedrock texture modified to look like obsidian. It is also known as "Bleeding Obsidian" among many members for its appearance instead of its official name, crying obsidian.

Crying obsidian's original intended use was to set the spawn point at the given place, but was scrapped with the introduction of beds. However, this block can be added to the game through mods, although these blocks will not appear in multiplayer worlds unless the multiplayer server has the same mod installed.

In Beta 1.5, the texture slot for crying obsidian was replaced by a grayscale replacement of the side of grassy dirt blocks, which is used for biome-compliant grassy dirt block sides, such as Mycelium.

Trivia

• Jeb received a message around February 2012 saying: "Will you bring back Crying Obsidian?" and Jeb replied: "When I make more preparations for texture space."^[4]
• The Pirate language term for obsidian is "Rock o' Tears", which is possibly a reference to crying obsidian.

References

1. ↑ http://twitter.com/jeb_/status/58821868924309504
2. ↑ http://twitter.com/jeb_/status/40350003591380992
3. ↑ http://twitter.com/jeb_/status/52994778224275456
4. ↑ https://twitter.com/jeb_/status/167547923041751040

Blocks
Natural	Air • Stone • Granite • Andesite • Diorite • Bedrock • Clay( Terracotta) • Cobblestone ( Moss) • Cobweb • Dirt • Gravel • Coarse Dirt • Bone • Ice • Monster Spawner • Sand ( Red) • Sandstone ( Red) • Obsidian • Snow • Sponge • Wet Sponge • Stone Brick ( Cracked • Moss • Chiseled) • Prismarine ( Dark • Brick) • Sea Lantern • Bee Nest
Manufactured	Bookshelf • Brick • Wool ( Carpet) • Concrete( Powder) • Conduit • Dried Kelp Block • Fence • Glass ( Pane) • Stained Glass ( Pane) • Glazed Terracotta • Hay Bale • Iron Bars • Jack-O-Lantern • Ladder • Painting • Scaffolding • Slabs • Smooth Stone • Cut Sandstone • Smooth Quartz • Smooth Red Sandstone • Slime • Snow • Stairs • Walls • Wooden Planks • Bee Hive • Honey Block • Honeycomb Block • Diamond Ore • Emerald Ore • Gold Ore • Iron Ore • Lapis Lazuli Ore • Redstone Ore Nether Quartz Ore
Mineral Blocks	Block of Diamond • Block of Emerald • Block of Gold • Block of Iron • Lapis Lazuli Block • Block of Quartz • Block of Redstone • Block of Coal
Utility	Bed • Brewing Stand • Cake • Cauldron • Chest • Shulker Box • Crafting Table • Enchantment Table • Furnace • Jukebox • TNT • Anvil • Blast Furnace • Barrel • Bell • Campfire • Cartography Table • Compost • Fletching Table • Grindstone • Lantern • Lectern • Loom • Smithing Table • Smoker • Stonecutter • Dispenser • Redstone Lamp • Door • Fence Gate • Lever • Note • Piston ( Sticky) • Pressure Plate • Rail ( Powered • Detector • Activator) • Redstone ( Wire • Torch • Repeater • Comparator) • Trapdoor • Trapped Chest • Hopper • Dropper • Daylight Detector • Tripwire Hook • Observer
Plants	Cactus • Dead Bush • Chorus Plant • Flowers • Grass ( Grass • Fern) • Leaves • Lily Pad • Melon • Mushrooms ( Huge)  • Mycelium • Podzol • Pumpkin • Saplings • Sugar Cane • Vines • Wheat • Log • Corals • Kelp • Sweet Berry Bush
Liquids	Lava • Water
Non-Solid	Fire • Blue Fire • Sign • Torch • Banner
The Nether	Glowstone • Unnamed Light Block • Netherrack • Nether Grass • Nether Brick ( Fence)  • Nether Quartz • Nether Wart • Nether Fungi • Nether Mushrooms • Soul Sand • Unnamed Soul Sand Block • Unnamed Speleothem Block • Magma Block
The End	Dragon Egg • End Stone • Purpur( Purpur Pillar) • Endstone Brick • End Rod • Dragon Head • Ender Crystal
Creative only	Barrier • Structure Block • Jigsaw
Bedrock Edition only	Stonecutter (old) • Nether Reactor
Technical	Piston Arm • Block 36 • Burning Furnace • Glowing Redstone Ore • Off-state Redstone Torch • Active Redstone Repeater • Flowing Water • Flowing Lava • Farmland • Pumpkin Stem • Melon Stem • Block 97 • Portal • End Portal Frame • End Portal
Unused	Locked Chest
Removed	Gear • Dirt Slab • Cyan Flower • Camera(PE)
Unimplemented	Crying Obsidian