Terracotta

Hardened Clay is a block with a blast resistance comparable to that of stone-based blocks. It serves no purpose except as a building material, but in that role it is decorative and moderately blast-resistant. Hardened clay can be obtained by smelting clay blocks or harvested from Mesa Biomes.

Obtaining
While hardened clay is made by smelting clay blocks (or harvested from a mesa biome), stained clay is made by crafting hardened clay and dye. See below for details. 6 colors of stained clay can also be found in the mesa biome.

Behavior
Hardened clay has the same blast resistance as most other stone blocks, which is significantly higher than the block of clay before being smelted. A block of hardened clay when one meter away from an explosion will protect any blocks behind it, though it will be destroyed in the process.