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What stones are used in a sauna?

Sauna makers here sell stones they name as olivine diabase; black vulcanite; black diabase; olivine diabase, round. Check which stones your heater's maker calls for; the stones guide covers the choice.

Check your heater's manual for the stone size and quantity it calls for before you compare anything here. Then filter by maker and where to buy, and read each product page for what the maker states about the rock and the amount in the box. The linked stones guide covers the choice, and the price on the maker's site comes last.

Picks by the numbers

Each pick is the product that comes first on one figure its maker publishes, with the next ones on that figure after it. Choosing which figures to rank by is our editorial choice; the order on each is the makers' own numbers. None is a judgement of quality, we have not tested these products, and whether we earn a commission on a product never decides a pick.

Where to buy the picks

Every match (5)

Filter the matches by price on the maker's site, warranty, safety listing and where to buy.

Showing 5 of 5

Prices are the price each maker's own site showed in US dollars on the date shown; the seller's page has the current price. Warranties and safety listings are the makers' own statements, cited on each product page. A price starting 'From' is the cheapest configuration a maker offers, which may leave out the heater or options. Every product here is sold by its maker on the maker's own site. Where a product page carries a paid link (to Amazon or another approved retailer), Saunakivi may earn a commission; no sort order or filter favours those products. We have not tested these products.