American Metalcraft · Pizza Stones & Baking Surfaces
PS1575 Round Cordierite Pizza Stone 15-3/4 Inch, Is It Non-Toxic?
Low PFAS concern; cordierite is a ceramic mineral with no known treatment.
Cordierite pizza stones are uncoated ceramic minerals, lower PFAS concern than nonstick cookware. Brand makes no PFAS claim, but material itself has no typical fluorine treatment pathway.
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
Cordierite ceramic
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is PS1575 Round Cordierite Pizza Stone non-toxic? What it is made of
Cordierite is a naturally occurring magnesium aluminum silicate mineral fired into a dense ceramic form. Unlike glazed stoneware or cast iron, cordierite pizza stones are typically unglazed or minimally treated, meaning fewer applied surface coatings to degrade or leach. The material is chosen for thermal stability and thermal shock resistance, allowing rapid heating cycles without cracking. No known lead, cadmium, or toxic glaze components are associated with cordierite pizza stone manufacture in established consumer safety records.
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.
Coating degradation and leaching over time
Unglazed cordierite is porous and will gradually absorb moisture, oils, and food residue into the ceramic body. Over years of use, this can contribute to microcracking and material weakening; the stone itself does not leach toxic compounds, but structural integrity degradation is a normal aging process.
Thermal shock and fracture releasing ceramic particles
Rapid temperature changes or mechanical impact can cause visible cracks or chips in the cordierite body. Small ceramic fragments could theoretically be ingested if the stone fractures during cooking; gradual preheating and inspection before use minimize this risk.
Moisture absorption and mold/bacterial growth if stored wet
Porous unglazed cordierite can absorb and retain moisture if cleaned improperly or stored in damp conditions. Prolonged moisture exposure creates conditions for mold or bacterial colonization of the stone surface; dry storage and dry-only cleaning prevent this risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Lead
Cordierite pizza stones are unglazed or have minimal surface treatment. No established records of lead or cadmium contamination in cordierite pizza stone products from reputable manufacturers; glaze hazard applies only to decorated or glazed ceramic alternatives.
Source, ATSDR ↗Aluminum leaching from cordierite mineral content
Cordierite contains aluminum as part of its crystal structure, but no established evidence shows leaching into food from cordierite pizza stones under normal cooking conditions. The mineral is thermally stable and food contact is indirect (pizza sits on the stone, not in liquid).
How is this PFAS grade calculated?
The brand's record and disclosure
American Metalcraft is a long-established commercial and consumer cookware manufacturer with no recorded recalls or safety violations related to pizza stones or cordierite products. The brand does not publish detailed material safety or PFAS disclosure statements, which is common for this product category and does not indicate a concern. No independent testing or third-party certifications (NSF, FDA certification beyond baseline compliance) are on record for this specific model, but such certifications are rarely sought for unglazed ceramic pizza stones.
How it compares in its category
Cordierite pizza stones are the standard thermal solution in this category, preferred over ceramic stoneware for thermal shock resistance and longevity. Unlike cast iron or steel alternatives, cordierite carries no rust or seasoning burden and requires no oil maintenance. They outperform glazed ceramic or terracotta alternatives in durability because the cordierite body itself is the functional material, not a coating that can chip or wear.
If you buy it
Preheat the stone gradually to avoid thermal shock; do not expose a cold or room-temperature stone to direct high heat. Clean only with dry brush or damp cloth after cooling; do not soak or use soap, which can be absorbed into the porous ceramic. Inspect regularly for visible cracks or chips; discard if structural damage occurs, as fragments could enter food. Store in a dry location to prevent moisture absorption that can weaken the material over years of use.
What is not known about PFAS in this product?
- Basis
- Model estimate, 82% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- American Metalcraft has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to PS1575 Round Cordierite Pizza Stone 15-3/4 Inch?
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.