American Metalcraft · Pizza Stones & Baking Surfaces
PS1575 15-3/4" Round Cordierite Pizza Stone, Is It Non-Toxic?
Lower concern. Cordierite ceramic is not associated with PFAS.
Cordierite pizza stones are uncoated mineral ceramics with no known PFAS risk. American Metalcraft makes no PFAS claims, but the material itself presents lower concern than nonstick cookware.
The better-graded swap
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts
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 15-3/4" Round Pizza Stone non-toxic? What it is made of
Cordierite is a naturally occurring magnesium-aluminum silicate ceramic engineered for thermal shock resistance, meaning it tolerates rapid temperature swings without cracking. It contains no intentional glazes, enamels, or surface coatings on this model, only the fired ceramic body. Cordierite is chemically inert at typical cooking temperatures (up to 2000°F in kiln settings, well above pizza oven use at 500-900°F) and does not leach aluminum, lead, or cadmium under normal food contact.
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 particulate shedding
Unglazed cordierite can develop micro-fractures or surface checking over many heat cycles. While the material itself is non-toxic, visible cracks may trap food and bacteria or shed ceramic particles if damage progresses; inspection and replacement are the management strategy.
Thermal shock fracturing
Cordierite is engineered to resist thermal shock but is not immune; rapid temperature changes (e.g., cold stone into hot oven, or wet placement) can cause cracking. This is a functional durability risk rather than a chemical safety hazard, but fractures can create sharp edges and particle debris.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Lead
This cordierite pizza stone is unglazed ceramic with no surface coating, enamel, or glaze layer on record. No glaze-related hazard is documented for this product.
Source, ATSDR ↗Aluminum leaching
Although cordierite contains aluminum as a structural component of the silicate lattice, the mineral form is not bioavailable and does not leach into food under normal pizza-baking temperatures. No leaching incidents are documented for unglazed cordierite cookware.
How is this PFAS grade calculated?
The brand's record and disclosure
American Metalcraft is a established U.S. foodservice equipment manufacturer with no publicly recorded product recalls, safety complaints, or disclosure statements specific to this pizza stone. The company does not publish material safety data sheets or third-party test results for ceramic cookware on this model. No certifications (e.g., NSF, FDA clearance statements) are documented for this product, which is typical for unglazed ceramic pizza stones sold as cookware accessories rather than formally regulated articles.
How it compares in its category
Unglazed cordierite pizza stones are the lowest-concern option in the pizza stone category compared to glazed ceramic, slate, or composite alternatives, which may carry glaze heavy-metal or coating-durability risks. Cordierite's thermal shock resistance is superior to traditional fired clay, reducing cracking and particulate shedding over repeated use cycles. This model's 15.75-inch round form is standard for residential pizza ovens and does not introduce material-specific safety trade-offs versus rectangular or larger cordierite stones.
If you buy it
Preheat cordierite gradually (over 30-45 minutes) to minimize thermal shock and premature fracturing. Avoid placing a cold or wet stone directly into a hot oven; allow it to acclimate to room temperature before use. Inspect for visible cracks or spalling before each use; discard the stone if damage is present, as fractured ceramic may shed particles. Clean with dry brush or soft cloth; do not soak or use harsh chemicals, as prolonged moisture can eventually penetrate small cracks.
What is not known about PFAS in this product?
- Basis
- Model estimate, 78% 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 15-3/4" Round Cordierite Pizza Stone?
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.