Clay (sometimes called hard clay to distinguish it from soft clay) is a material that players can obtain with level 1 Mining, to gain 5 Mining experience. When mined, it almost spawns instantly.

Players can mine clay rocks at the following locations:
, If a player uses water on clay, soft clay is created. This is used to make pottery in Crafting, furniture in Construction, and Magic tablets.

If a bracelet of clay is worn while mining, soft clay is mined instead. Clue geodes are still obtainable when using a bracelet of clay.

It is rare to find a gem in a clay rock.