American Metalcraft · Pizza Stones & Baking Surfaces
PS1575 15-3/4 in Round Cordierite Pizza Baking Stone, Is It Non-Toxic?
Buy. Cordierite ceramic pizza stone carries lower PFAS concern.
Cordierite is a naturally occurring mineral ceramic with no surface nonstick coating, making PFAS exposure unlikely. No brand PFAS claims available, but the bare ceramic material itself is not a typical PFAS carrier.
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 baking stone
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is PS1575 15-3/4 in Round Baking 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 or enameled cookware, cordierite baking stones are typically unglazed and non-porous after firing, meaning no surface coatings (lead, cadmium, or Teflon-type coating) are applied. The material's density and thermal stability make it resistant to thermal shock and suitable for high-temperature pizza ovens and conventional ovens up to around 2500°F, though typical home use peaks at 500°F.
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.
Ceramic degradation and particle shedding
Over many heating cycles, cordierite can develop micro-cracks and surface erosion. If the stone breaks or cracks extensively, particles may shed into food; inspect regularly and replace if structural integrity is compromised.
Thermal shock and fracturing
Placing a cold cordierite stone directly into a preheated oven or pouring liquid onto a hot stone risks cracking due to thermal stress. Fractures are a product durability issue and potential contamination vector, not a direct chemical hazard.
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 by design. No glaze, enamel, or ceramic surface coating is applied, so this hazard class does not apply to this product.
Source, ATSDR ↗Heavy metals
Cordierite is a stable, fired ceramic mineral. No known reports of lead, cadmium, or other heavy-metal leaching from unglazed cordierite pizza stones into food or water during normal use. American Metalcraft does not disclose raw material sourcing or heavy-metal testing data.
Source, FDA ↗Teflon-type coating non-stick coating fume risk
This product is a natural ceramic stone with no Teflon-type coating or fluorocarbon coatings. This hazard does not apply.
How is this PFAS grade calculated?
The brand's record and disclosure
American Metalcraft is a U.S.-based foodservice equipment manufacturer with a long history in commercial and home kitchen products. The company does not publicly disclose detailed PFAS or heavy-metal testing data on its website or product packaging. No major product recalls or safety controversies specifically tied to this cordierite stone are on record. The brand's silence on material certifications reflects typical industry practice for uncoated ceramic baking stones, which carry minimal regulatory scrutiny.
How it compares in its category
Cordierite pizza stones are among the lowest-hazard options in the baking stone category. They avoid the risks present in some ceramic tiles or decorative stones (which may contain lead or cadmium in glaze) and bypass entirely the Teflon-type coating/perfluorocarbon concerns of non-stick metal pans. Cast iron and steel alternatives require seasoning maintenance but present no chemical leaching risk. Compared to cheaper composite or clay stones, cordierite's thermal durability means less dust, cracking, or particulate shedding over years of use.
If you buy it
Cordierite stones are durable and low-maintenance, hand-wash with warm water and avoid the dishwasher and sudden temperature swings (do not place a cold stone into a hot oven). Inspect for cracks before each use, as fractures can expand during heating and shed ceramic particles. The porous surface will absorb food oils and water; this is normal and does not degrade safety. Replace if the stone develops large cracks, deep staining that traps moisture, or visible surface erosion, though this typically takes years of regular use.
What is not known about PFAS in this product?
- Basis
- Model estimate, 88% 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 in Round Cordierite Pizza Baking 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.