Granitestone averages 15 out of 100 on PFAS Authority's PFAS and toxin screen across the 2 Granitestone products graded as of October 2026, and none of them reach its 70 point pass mark.
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Granitestone grades Bad on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. See what every brand has published about PFAS for how that compares.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Granitestone averages 15 out of 100 on PFAS Authority's PFAS and toxin screen across the 2 Granitestone products graded as of October 2026, and none of them reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
Is Granitestone non-toxic?
No Granitestone product we graded reaches Good. The best of them is Granitestone Piezano 3-Piece Pizza Stone Bake & Serve Set at 15/100.
Which Granitestone products should I avoid?
The lowest-graded Granitestone products we have scored are As Seen On Tv Granitestone Piezano Replacement Stone, Granitestone Piezano 3-Piece Pizza Stone Bake & Serve Set. Each one links to the evidence behind its grade.
