Alchemy Pearl Grey Slate Effect Large Anti Slip Porcelain tile in a 100x100 cm format, these porcelain tiles recreate the appearance of natural slate while delivering the resilience and easy maintenance of porcelain. With an R11 anti slip rating, they are well-suited for wet environments such as pool surrounds and commercial spaces. The matt finish offers a natural, understated surface, and rectified edges provide a clean, seamless look with minimal grout lines.