Stone Bricks

Stone Brick are one of the materials that are used in the Strongholds. Stone bricks have about the same blast resistance as Brick; a TNT block surrounded by either of these will only destroy one block in each direction. Cracked, mossy, and regular stone bricks all have the same blast resistance.

Crafting
Stone Bricks can be crafted by placing 4 Stone blocks in a square, meaning they can be crafted without a Crafting Table.

Uses
When crafting Stone Bricks from stone, it is best to use a Silk Touch enchanted pickaxe when mining stone. This will save you time and fuel, but you still have to find 5 Diamonds, 2 for enchantment table and 3 for the pickaxe to mine the obsidian, and then make at least half a stack of books (For bookshelves) to have a decent chance of randomly obtaining the enchantment.

History
Stone Brick was implemented in the 1.8 Beta update.

In the Beta stages of the game, Stone brick that the player crafts appeared to have a very small chance of having the object change to Cracked Stone Brick or Mossy Stone Brick when harvested. The same phenomenon also happened with harvested Stone Brick Stairs. This was a glitch that was fixed in version 1.0.

As of 1.2.1, there was a new type of stone brick added called the Circle Stone Brick.

Trivia

 * In Beta 1.7, the file "en_US.lang" contained a reference to this block as "tile.stonebricksmooth.name=Stone Bricks", giving the first confirmation of their name.
 * The insect mob known as Silverfish spawn from blocks identical in appearance to Stone Bricks.
 * You can also mine another type of a "Normal" Stone Brick (Neither Mossy nor Cracked), if you mine it from the Stone Brick Stairs.
 * Stone Bricks that are "crafted" by breaking a Stone Brick Stairs that was placed when facing South (F=3) are not stackable with Stone Bricks that have been crafted from Stone or obtained by destroying a Stone Brick Stair in East (F=2) direction. There doesn't seem to be a visual difference at this time, though.