{"product_id":"nordvik-stone-set-40-lb-olivine-sauna-stones","title":"Nordvik Stone Set · 40 lb Olivine Sauna Stones","description":"\u003cp\u003eRounded olivine diabase — the stone Finnish saunas actually use. Dense enough to hold heat between ladles, rounded so air circulates and your heater's elements last. One 40 lb set fills most wall-mount heaters; tower heaters take 4–6 sets (we'll tell you the exact count on your pre-ship call).\u003c\/p\u003e\u003ch3\u003eDetails\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e40 lb of rounded olivine diabase, 2–4\" grade\u003c\/li\u003e\n\u003cli\u003eRinse before first use; re-stack loosely once a year\u003c\/li\u003e\n\u003cli\u003eReplace every 1–2 years with regular use\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003ca href=\"\/pages\/heater-sizing-guide\"\u003eHow many sets does your heater need? →\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Nordvik","offers":[{"title":"Default Title","offer_id":54428861333717,"sku":"NV-STN-40","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/9430\/9077\/files\/hf_20260805_013851_a3ae9262-7bc0-4ce1-9130-8444d5b8ed41.png?v=1785894114","url":"https:\/\/cedarcold.com\/products\/nordvik-stone-set-40-lb-olivine-sauna-stones","provider":"Cedar \u0026 Cold","version":"1.0","type":"link"}