These pumice / lava stones are essential for any clay chiminea. Simply line the bottom of your chiminea with these stones before building your fire. Pumice, as well as being lightweight, is an excellent insulator and will protect the clay from thermal shock. One bag will line the bottom of any of our clay chimineas for good. There’s no need to buy again – these stones can be used over and over again.
Why ‘lava’ stones? Because pumice is actually a very light sort of volcanic rock, a rough air-filled volcanic glass that forms naturally in the top layers of silica-rich lavas. That’s what we call exotic!