Breville · Pizza Stones & Baking Surfaces
Breville 13 Inch Pizza Stone, Is It Non-Toxic?
Lower PFAS concern; pizza stones are inherently uncoated mineral.
Pizza stones are made from cordierite or similar refractory ceramics, inert mineral materials that don't require nonstick or water-repellent coatings. No PFAS-relevant coatings are applied to pizza stones in standard manufacturing.
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
Ceramic-coated cordierite stone (inert mineral base)
Lab data
No public lab test
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Is Breville 13 Inch Pizza Stone non-toxic? What it is made of
This pizza stone is cordierite (a magnesium aluminum silicate mineral) with a ceramic glaze coating. Cordierite is thermally stable and does not leach into food under normal baking conditions. The ceramic coating is inert once fired; it does not contain known problematic additives like lead or cadmium in food-contact glazes from reputable manufacturers like Pyrex. The stone is designed to handle oven temperatures up to approximately 500F without degradation.
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 fracture
Cordierite stones can crack if subjected to rapid temperature changes (e.g., removing from hot oven and immediately rinsing). Cracks expose the porous interior to food and moisture. This is a use hazard, not a manufacturing defect, but preventable with proper handling.
Coating degradation over time
Repeated high-heat cycles and dishwashing can gradually wear the ceramic surface glaze. Visible wear or flaking is cosmetic in most cases but may reduce non-stick properties and increase surface roughness, which can trap food particles.
Microcracking and hidden fractures
Manufacturing defects or undetected cracks from shipping can be present on arrival and may not be immediately obvious. Once in use at high temperature, hairline cracks can expand and potentially release cordierite particles if stone fractures completely.
Moisture absorption if damaged
If the ceramic coating is breached, the porous cordierite base can absorb water and oils. This promotes bacterial growth in cracks and can weaken the stone structure over repeated heating, though risk is low with typical home use.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Lead
Pyrex is a US-manufactured product subject to FDA Part 109 limits on lead and cadmium leaching. No recalls or violations on record for this specific product. Ceramic glazes from established brands meet legal limits, though rigorous third-party testing results are not publicly disclosed.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
Pyrex (currently owned by Instant Brands) is a long-established kitchenware manufacturer with no public safety recalls specific to pizza stones or ceramic bakeware in recent years. The brand does not prominently disclose detailed glaze composition or third-party testing results for this product. Pyrex maintains general compliance with FDA ceramic cookware standards (CFR 21 Part 109) but does not publish detailed safety certifications beyond that regulatory baseline.
How it compares in its category
Cordierite pizza stones are considered industry standard for home use; they are chemically superior to unglazed stoneware, which can absorb oils and harbor bacteria if cracked. Compared to cast iron or steel alternatives, cordierite avoids rust and seasoning maintenance. Pyrex's ceramic coating is typical of major brands; no credible evidence suggests it differs significantly in safety from competitors like Le Creuset or Emile Henry stones.
If you buy it
Preheat slowly to avoid thermal shock and cracking; do not rinse with cold water immediately after heating. Hand wash only; avoid dishwasher, which can degrade the glaze over time. Inspect annually for cracks or chips; discard if the underlying stone is exposed, as it can absorb moisture and fail. Store in a dry place; do not use as cutting surface or expose to direct flame.
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
- Breville has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Breville 13 Inch 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.