15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts vs Emile Henry French Ceramic Pizza Stone: which is safer?
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts is the clear pick. Williams Sonoma Emile Henry French Ceramic Pizza Stone carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleGlaze degradation and surface leaching
LikelyThermal stress fracture
PossibleMicroporosity and microbial retention
Williams Sonoma
Emile Henry French Ceramic Pizza Stone
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleGlaze degradation and ceramic dust release
ReportedMicrocracking and thermal fracture
PossibleBacterial or mold growth if not dried thoroughly
Where these two actually differ
- We flag Glaze degradation and surface leaching, Thermal stress fracture and Microporosity and microbial retention on the and not on the Williams Sonoma.
- We flag Glaze degradation and ceramic dust release, Microcracking and thermal fracture and Bacterial or mold growth if not dried thoroughly on the Williams Sonoma and not on the .
- The is Ceramic (clay-based baking stone) where the Williams Sonoma is Glazed ceramic (Emile Henry brand), which is most of the difference in these two grades.
- The gap is 25 points, wide enough that this is not a close call, and the is the one to buy.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More pizza stones & baking surfaces: see the full ranking