Quarry tile is made with ground materials in a process that’s very similar to brick (though technically stronger). This tile type’s name implies that it comes from a quarry, but that’s not actually the case. Quarry tile is made from ground minerals, like feldspar, clay, and shale, that are ground together then baked at over 2000 degrees.
Though durable, quarry tiles are susceptible to staining, so they shouldn’t be used in the kitchen. Boylen recommends them for high-traffic areas since they offer a sense of purposeful design and are naturally slip-resistant.