Old Stone · Pizza Stones & Baking Surfaces
Old Stone Kitchen | Old Stone Pizza Stone Round 16 Inch Bread Baking Stone New In Box | Color: Tan | Size: Os, Is It Non-Toxic?
Uncoated ceramic pizza stone with no coating on record.
Material as recorded is natural ceramic stone without a coating. No water-repellent finish or nonstick treatment on record. Brand has no PFAS statement on record.
The better-graded swap
Deluxe Square Pizza Stone with Rack
90/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Natural ceramic stone, uncoated
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is Old Stone Kitchen | Old Tan | Size: Os non-toxic? What it is made of
This is a solid, naturally fired ceramic stone with no applied coatings, glazes, or chemical binders. Lodge's pizza stones are made from food-grade ceramic clay fired at high temperature, which creates a stable, inert surface that does not leach or degrade into food. The tan color indicates natural mineral content in the clay rather than added pigments or dyes. Uncoated ceramic is chemically simple and presents minimal leaching risk under normal baking conditions.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Thermal shock and fracturing
Uncoated ceramic pizza stones are brittle and can crack if exposed to rapid temperature swings (e.g., placing a hot stone on a wet surface or adding cold dough to a preheated stone). Cracks do not release toxic substances but can compromise performance and pose minor burn risk if fragments dislodge during use.
Microorganism growth in porous ceramic
The porous nature of fired clay allows moisture and food residue to be absorbed if not cleaned properly. Wet storage or inadequate drying can promote mold or bacterial colonization on the stone surface. Regular cleaning and thorough air drying mitigate this risk; it is a maintenance concern, not an inherent material hazard.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Lead
Lodge pizza stones are uncoated and unglazed by design, so decorative or functional glazes are not a factor. This product does not present the glaze-leaching risk typical of some imported ceramic cookware. No glaze means no glaze-based heavy metal hazard.
Source, ATSDR ↗Aluminum leaching
Pizza stones are ceramic, not aluminum or aluminum-coated cookware. This hazard class does not apply to this product.
Teflon-type coating/Teflon fume risk
This is a bare ceramic stone with no nonstick coating. Teflon-type coating fume risk applies only to coated cookware exposed to high temperatures; it is not relevant here.
How is this PFAS grade calculated?
The brand's record and disclosure
Lodge Manufacturing is a long-established US cookware maker (founded 1896) with a strong reputation in cast iron and ceramic bakeware. The company does not publicly disclose detailed material sourcing or third-party safety certifications for pizza stones specifically. No recall history or safety complaints are on record for Lodge ceramic pizza stones. Lodge's silence on PFAS is typical for bare ceramic products, which are not materials linked to PFAS.
How it compares in its category
Uncoated ceramic pizza stones show lower concern regarding fluorinated compound migration compared to coated cookware. Unlike glazed ceramic (which may contain lead or cadmium in decorative coatings), or Teflon-type coating nonstick surfaces (which pose fume risks if overheated), bare fired clay is chemically inert and does not degrade into food. Pizza stones in this category have no known systemic safety issues across major manufacturers. Lodge's product is a standard, mid-range offering with performance equivalent to Emile Henry or Pampered Chef equivalents.
If you buy it
Preheat the stone slowly (avoid thermal shock by placing it in a cold oven and heating gradually to your target temperature, typically up to 500F). Do not use soap on the stone; instead, allow it to cool and scrape debris with a stiff brush or plastic scraper. Avoid rapid temperature changes, which can crack ceramic. Replace only if the stone develops deep cracks or large chunks break off; minor surface damage does not affect safety. Store in a dry place to prevent moisture absorption and mold growth in the porous material.
What is not known about PFAS in this product?
- Basis
- Model estimate, 87% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Old Stone has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Old Stone Kitchen | Old Stone Pizza Stone Round 16 Inch Bread Baking Stone New In Box | Color: Tan | Size: Os?
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts
- Ceramic (clay-based baking stone)
- The brand calls it PFAS-free, which we have not verified
- Glaze degradation and surface leaching
3 hazards checked on this product, all on its full breakdown.
Deluxe Square Pizza Stone with Rack
- ceramic or unglazed stone; no nonstick coating
- The brand calls it PFAS-free, which we have not verified
- Ceramic or stone cracking and fragmentation
2 hazards checked on this product, all on its full breakdown.
- carbon steel (bare metal, no coating)
- We found no PFAS statement from the brand
- Rust and corrosion
2 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonMore pizza stones & baking surfaces grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.