Harvia Sauna Rocks | Olivine Grey

Harvia Olivine Diabase sauna stones: dense, durable, built for authentic löyly Harvia’s Olivine Diabase sauna rocks are sourced from Western Finland, a region known for producing high quality subvolcanic stone. Finished in a natural dark grey, these rocks are prized for their density and durability, allowing them to store and release heat efficiently over repeated heating cycles. That efficient heat retention translates into strong, consistent steam (löyly) for a more authentic sauna experience. Supplied in a 20kg box with stones sized 10-15cm, these rocks suit a wide range of sauna heaters and are a reliable, traditional choice for anyone wanting long-lasting performance without compromising on heat quality. Key Features 20kg box, stone size 10-15cm Sourced from Western Finland’s subvolcanic rock deposits Dense composition for excellent heat storage and retention Withstands repeated heating and cooling without breaking down Produces optimal steam for a genuine sauna experience Compatible with most sauna heater models Note: heavy item shipping rates apply for this item