Vitrified tiles are a type of ceramic tile known for their extremely low porosity and high durability. They are manufactured by hydraulic pressing a mixture of clay, quartz, feldspar, and silica at high temperatures, which causes the materials to fuse into a glass-like (vitreous) surface. This process, called vitrification, results in a hard, dense tile that is highly resistant to water, stains, and scratches, making it a popular alternative to natural stone flooring like marble and granite