Stoneware vs Earthenware Pottery: The Science of High-Firing at 1280°C

When clay reaches 1280°C (Cone 9) in our gas-reduction kiln, silica and feldspar minerals melt into a liquid glass matrix that fills every micro-pore. This transformation is known as vitrification.

Why Vitrified Stoneware Outperforms Low-Fire Clay

Unlike low-fired earthenware which absorbs water and stains over time, vitrified stoneware absorbs less than 0.5% water, making it inherently dishwasher, microwave, and food-safe.