They too are shale plates, with a thickness of 1.5 to 2.5, and 2.5 to 4, as there are thicker pieces for outdoor applications like courtyard pavings etc.
Their colours comprise beige to pale yellow, as it is a natural material and they are characterized by a non-slip surface, rendering it ideal for patios, squares, sidewalks etc.
Can be also fitted indoors, as per customer specification.