Lava Stones Rock Cooking Stones Lava Rock Gardeco Lava Stones 4 Litres
$30.64 (as of December 10, 2018, 8:55 am)
Helps prevent thermal shock and therefore cracking. Use in the bottom of clay chimeneas to prevent the hottest part of the fire touching the clay. Suitable for any clay chimeneas. One bag is enough for one chimenea. Can be used time and time again. Does not burn.