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Obsidian is the second-strongest Block in Minecraft, after Bedrock, and is the strongest block that can be mined by players, as Bedrock can be placed but cannot be mined once it is placed.

Source

Obsidian can only be found naturally near Lava beds that are below sea level. It is created when Water touches a lava source block, causing the lava block to turn into an obsidian block. For this reason, it is usually found very deep underground, around layer 10. However, it can still be found anywhere where water and lava meet.

To collect obsidian, a diamond Pickaxe must be used, and it will take 8.5 seconds to mine (quicker if the pickaxe is enchanted with efficiency). It takes approximately 250 seconds to break an obsidian block by hand, and about 50 seconds to break it with a pickaxe weaker than diamond, although neither will yield any obsidian.

Obsidian is a renewable resource, as the spawning platform and Ender Crystal pillars in The End (which are made of obsidian) are regenerated when a Player re-enters the dimension or re-spawns the Ender Dragon. Obsidian is also spawned when Nether Portals are created, as portal frames are also made of obsidian. The four extra corner blocks of a nether portal can be mined and used to create other nether portals, without deactivating the portal.

Players can create obsidian themselves by pouring water from a Bucket over a pool of stationary lava. If the lava is flowing, it will create Cobblestone, instead of obsidian.

When an Ender Chest is mined without a Pickaxe that's not enchanted with Silk Touch, 8 obsidian will be dropped instead.

Uses

Obsidian is required to make the frame of a Nether Portal. Prior to update 1.7, a portal could to be built in either a 4×1×5 or a 2×1×3 frame of obsidian without any blocks in the middle of the portal. Currently, the maximum size a portal can be is a 23×1×23 frame, with the middle left open. The corner blocks do not have to be included in the portal. After the portal is complete, lighting one of the bottom obsidian blocks on fire with a Fire Charge or a Flint and Steel (lava will not work) will activate the portal, and grant access to The Nether.

Obsidian is very resistant to explosions (with the exception of a Wither's skeleton skull attack). It is therefore useful for players interested in building near-indestructible rooms, which can either be used for protection against explosions outside, or as a trap for other players caught in an explosion within the room. Obsidian is therefore a common building material for defensive structures on Multiplayer servers.

Mining

Tool Enchantment Mining Time (sec)
Diamond Pickaxe No Efficiency 9.2
Efficiency I 7.25
Efficiency II 5.55
Efficiency III 4.3
Efficiency IV 3.3
Efficiency V 2.55
Gold Pickaxe Efficiency 1–5 20.85
Iron Pickaxe Efficiency 1–5 41.7
Stone Pickaxe Efficiency 1–5 62.5
Wooden Pickaxe Efficiency 1–5 125
Other non-enchantment 250

Crafting

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Enchantment Table
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Ender Chest
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Book
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Obsidian
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Diamond
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Diamond
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Eye of Ender
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Obsidian
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Beacon
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Glass
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Glass
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Glass
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Nether Star
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Obsidian
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Obsidian


Trivia

  • While obsidian is a strong block in Minecraft, obsidian in the real world is a fragile volcanic glass. However, it is capable of reaching a sharpness equal to (if not, higher) diamond. It was for this reason that obsidian was a popular material used for arrow heads throughout earth's history.
  • Changing the in-game language to "Pirate" will rename obsidian to "Rock o' Tears", possibly a reference to the unimplemented Crying Obsidian.
  • Village blacksmiths and Nether Fortress Chests can rarely contain obsidian, although between the two, it is three-times as likely to be offered by a blacksmith.
  • In Minecraft: Pocket Edition, Glowing Obsidian (a red-glowing variant), could be created when activating a Nether Core Reactor. However, it cannot be mined or obtained.
  • Obsidian is one of only a few blocks that cannot be destroyed by an ender dragon (the others being end stone, air, and bedrock). Instead, the dragon will phase through it, and knock back any player hiding behind one of the obsidian pillars, causing damage to the player.
  • Despite being one of the most durable blocks, the Wither can still break it with its attacks.

Gallery

Obsidian

Click for full Obsidian gallery.

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