“HARVIA” Sauna Heater Stones Black Vulcanite

Black vulcanite sauna heater stone is a small granular, dark grey stone. When wet, the stone shines black making it a great-looking option with selected Harvia heaters. The stone’s volcanic origins date back to ca. 2000 million years. Based on its structure and composition, vulcanite is a good choice for a sauna stone as it is hard and durable.

• Stylish vulcanite sauna heater stone. Shines black when wet.
  
• For electric heaters and as a top stone for wood burning heaters
  
• Split-face stones store plenty of heat, making the water thrown onto them vaporise efficiently on the broad fracture surface
  
• The split-face stones are easy to stack and enable good air circulation
  
• Excellent resistance to heat fluctuations and thermal conductivity. Good stone gravity and heat storage capacity.
  
• Stone species: Vulcanite
  
• Stone size 5-10 cm and box weight 20 kg
  
• Does not contain harmful ingredients
  
• Check the right stone size for your heater from the heater manual