Split-Faced Olivine Diabase Sauna Heater Stones — 5–10cm, 20kg
Good löyly starts with good stones. Olivine diabase is the gold standard for sauna heater rock, dense, durable, and prized for its high heat retention and resistance to thermal shock, so it holds up to the repeated heating and sudden cooling that comes from pouring water on the rocks, session after session. This split-faced 5–10cm variant is packed in a 20kg box, sourced from volcanic rock and cut to size for reliable performance in your heater.
Why you'll love it:
- Superior Heat Retention: Olivine diabase's density gives it excellent thermal conductivity, so your heater warms efficiently and holds temperature consistently through the session.
- Built for the Ritual: When water is poured over the stones, they release that heat as steam — löyly — the traditional heart of a real sauna session.
- Resists Thermal Shock: Handles the constant cycle of intense heat and sudden cooling from water without breaking down or crumbling like lower-grade rock.
- Split-Faced for Airflow: The split-face shape allows good air circulation through the heater bed, helping your unit heat evenly.
- Volcanic Origin: A naturally occurring volcanic stone, chosen specifically for its density and durability under sauna conditions.
- Right Size for Most Heaters: 5–10cm stones suit most electric sauna heaters — check your heater's recommended stone size before ordering.
What's included: One 20kg box of split-faced olivine diabase sauna stones, 5–10cm.
