what type of rocks are sauna stones
The best sauna rocks are actually igneous rocks which come from cooled lava. Yes, that does cover a variety of rocks from granite (which are too heavy) to pumice (too light), but there exists a special type of dark-colored volcanic rocks which are juuust right.he Rocks and your Sauna Heater. Once you have the right stones, you must remember not to operate the heater without the rocks in the tray. Size is important too. The sauna rocks should be about the size of your fist or a large potato.