Clay Block

A Clay Block is a block found near or in water. Breaking the block gives you 4 clay, which can then be smelted into Bricks. There are few clay pockets in each world so it's advisable not to start a house with bricks because the likelihood of finding enough clay to make a decent-sized house is slim. It is normally found in clumps of 4-10. In some cases, there may not actually be any Clay in a certain world. As of 0.9.0, the addition of rivers makes clay much easier to find.

Crafting
A Clay Block can be crafted by using 4 clay. Breaking the block gives you back the clay.

Smelting
Smelting clay will give you a brick. You can use it to create a Brick Block. A clay block can be smelted into Hardened Clay, which can be crafted into stained clay.

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