You can mine it in varrock mine check the world map it is right outside varrock. By turning clay into soft clay is a very easy way to make money.
Chat with our AI personalities
With clay you can make bricks and clay blocks (blocks identical to the ones you mined to obtain the clay). Brick are made by smelting the clay in a furnace, and clay blocks are crafted like this: E E E C C E C C E E = Empty C = Clay Bricks can then again be made into brick blocks, crafted in the same way as the clay blocks, just replacing the clay with brick.
mud+sand=clay
To get soft clay within Runescape you must first mine a clay rock, located in many mines throughout Runescape, once you have some clay you must get a bucket and fill it with water and use it on the clay.
Clay goes for 177Gp each Soft-Clay goes for 244GP each
Mine some clay, pour water(bucket) on it, and then use a chisel on the soft clay.